How To Bulk Like A Pro (Using Science)

11 May 2025


How To Bulk Like A Pro (Using Science)



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Here are two things you might find helpful:

1. My Free Training Program Quiz: https://jeffnippard.com/pages/quiz (figure out which program is best for you)

2. My Nutrition App: http://bit.ly/jeffmacrofactor (Use code Jeff for a FREE 2 week trial)

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In This Video:

I cover how to bulk the proper way. You'll learn how to build muscle while minimizing fat gain through your diet, training, cardio and supplements.

References:

Bulking vs Maingaining
https://pubmed.ncbi.nlm.nih.gov/12094125/

Bulking in Experienced Lifters
https://pmc.ncbi.nlm.nih.gov/articles/PMC6942464/
https://pmc.ncbi.nlm.nih.gov/articles/PMC8167794/
https://www.researchgate.net/publication/339573950

Protein Intake
https://pubmed.ncbi.nlm.nih.gov/28698222/

Coffee
https://pubmed.ncbi.nlm.nih.gov/29167102/

Fish Oil
https://pubmed.ncbi.nlm.nih.gov/34505026/
https://pubmed.ncbi.nlm.nih.gov/35914448/
https://pmc.ncbi.nlm.nih.gov/articles/PMC9641984/
https://pubmed.ncbi.nlm.nih.gov/30646157/

Magnesium
https://pmc.ncbi.nlm.nih.gov/articles/PMC3958794/
https://academic.oup.com/sleep/article/45/4/zsab276/6432454

Vitamin D
https://pmc.ncbi.nlm.nih.gov/articles/PMC10518189/

Ashwagandha
https://examine.com/supplements/ashwagandha/?show_conditions=true

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Timestamps:

0:00 – My bulking experiment
2:00 – Bulking builds more muscle than maingaining
4:00 – Bulking nutrition
7:34 – My full day of eating on a bulk
9:04 – Training on a bulk
10:50 – Should you do cardio on a bulk?
11:27 – What supplements to take on a bulk

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Written by Jeff Nippard
Research Assistant: Max Edsey
Filmed by Matt Dziadecki https://www.instagram.com/dziadecki/
Additional Filming by Cam Cline https://www.instagram.com/cameronncline/
More Filming by Brandon Wells https://www.instagram.com/brandonblurts/
Edited by Rickie Ho, Jeff Nippard (https://twitter.com/coldgamerick)
Graphics by Rickie Ho, Jeff Nippard & Meraki Films
Music Arranged by Jeff Nippard
Music sourced from Epidemic Sound

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About me: I'm a Canadian natural pro bodybuilder and internationally-qualified powerlifter with a BSc in biochemistry/chemistry and a passion for science. I've been training for 15 years drug-free. I'm 5'5 and fluctuate between 160 lbs (lean) and 180 lbs (bulked).

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Disclaimers: Jeff Nippard is not a doctor or a medical professional. Always consult a physician before starting any exercise program. Use of this information is strictly at your own risk. Jeff Nippard will not assume any liability for direct or indirect losses or damages that may result from the use of information contained in this video including but not limited to economic loss, injury, illness or death.

I've been bulking for this entire year straight an actual proper bulk with optimized training and nutrition and I've made the most gains that I've made in years and in this video I'm going to try to convince you to do the same if you click this video I'm sure you're interested in building some more muscle but maybe you're not sure if bulking is a good idea you've probably heard that the heavy bulking that bodybuilders do is outdated Bro Science but a lot of people still do them three servings of checks let's pour on I don't know 3 cups of milk or so so that puts me about 170 G of of carbs 25 g of protein and about 25 G of fat for this whole bowl or you may have even heard that you don't need to bulk at all you can just main gain meaning you maintain your weight while gaining muscle don't bulk don't cut main gain the reality is old school dirty bulks do build muscle but they also have a problem they cause way more fat gain than muscle gate there are thousands of stories from people online who figured this out the hard way and it's caused a lot of people to swing all the way way back to the opposite end of the spectrum never actually committing to a bulk and playing it safe with main gaining forever and sure main gaining is possible but it has a problem too you'll never build as much muscle with main gaining as you will with a proper bulk so in this video I'm going to explain why bulking is most effective for building Nole I'll show you the exact meals that I'm eating in my own bulk and I'll teach you how to set up your own science-based bulking plan for maximum muscle gain and minimum fat gain I've been doing a proper bulk since January 1st so just about a year it's the first serious bulk I've done in a long time and I've built a significant amount of muscle measured by both dexa and ultrasound so that's tiny little Gap that's fat and then from here to here is all muscle and did I mention that is my weaker arm and that I can't reveal exactly how much muscle I've gained yet cuz I'm the subject of a case study at McMaster University but I'll say it's more than I expected and I'll reveal the results of that study in the New Year if your main goal is to build muscle and you've never done a proper bolt before I strongly encourage you to do what I did this year I'm not the only one who's had success with bulking here a few examples from some of my followers who've also done bulking the proper way this is what you can expect when you actually commit to a bulk and do it right a bulk is when you eat more calories than you expend putting your body in a caloric Surplus if you do this you'll gain weight and if you bulk the right way that weight should mostly come from muscle instead of fat a lot of people completely freestyle their bulk gain a ton of fat and end up giving bulking a worse rep than it actually deserves now at this point you're probably wondering why should I do a bulk anyway why not just recomp forever the answer is that you'll never build as much muscle through recomping as you will through proper bulky you'll probably never reach your full muscular potential that's because your body doesn't really care about building muscle your body cares about survival in evolutionarily speaking survival means not starving to death so if your body doesn't have a surplus of calories it'll use the limited energy available to do more important things like making sure that your organs have enough glucose empowering your immune system to fight off pathogens again you can still build some muscle in a caloric deficit or at caloric maintenance as long as you train hard it just won't be as high on the priority list on the other hand if you're in a caloric Surplus your body knows that starvation isn't a threat and it can allocate more energy toward the less evolutionarily imminent process of getting more jacked the research shows this as well this study had one group of subjects main gain on about 25 200 calories per day and another group bulk on about 4,300 calories per day both groups followed the same training plan for 8 weeks and after 8 weeks the Bulan group gains significantly more fat free mat I found it super surprising that in this study the bulking group actually didn't gain any fat either it was basically all lean tissue that they gained but that's probably because they were new lifters when you look at studies on more experienced subjects bulking still causes more muscle gain but it also causes more fat gain but again there is a way to avoid that excess fat gain and next I'll explain exactly how to do that through your diet training cardio and supplements how much fat you gain on your bulk mainly depends on how fast you gain weight if you gain weight too quickly the majority of that weight will be fat building muscle takes time and you can't force feed muscle growth the general scientific consensus for lean bulking is to gain 1 to 2% of your body weight per month if you're a beginner and 0.5 to 1% of your body weight per month if you're an intermediate to Advanced lifter so let's just say you've been training for 2 years and you weigh 170 lb that means you should gain about 1 to 2 lb per a month on your bulk that's pretty slow it means if you bulk for the entire year like I'm doing you'd gain 12 to 24 lb if you're closer to being a beginner it's definitely possible that 100% of your weight gained could be from lments especially if you have good genetics but if you've been training for a while and you're closer to your so-called natural muscular limit half of it could be lean and the other half could be fat in my opinion that's okay though because you've still made gains rather than just spinning your wheels and you can always do a cut after your bulk is over to trim that fat off as long as you cut Rel ATIV L slowly train smart and eat enough protein you should retain most of that new muscle that you added on your bulk so to gain weight at the appropriate rate how many calories should you eat well you definitely shouldn't do the old school dirty bulking approach where you just eat as much as humanly possible these dirty bulks usually result in a massive caloric Surplus as much as 50 to 100% above maintenance without some serious anabolic assistance that type of bulk will simply cause rapid fat gain instead studies show that even a 5 to 10% caloric Surplus is enough to give your body the resources that it needs to lay down new muscle tissue without ramming those extra calories into your fat stores I maintain my weight at around 2800 calories per day if I eat 2,800 calories I don't gain weight and I don't lose weight so when I bulk I simply increase my calories by 5 to 10% up to around 3,000 calories per day then I'll adjust those calories up or down depending on if I'm gaining too fast or too slow if you don't know your maintenance calories you can simply multiply your body weight in pounds by 14 to 18 and that should get you in the right ballpark or you can screenshot the steps on screen to figure it out for yourself or better still you can download the macro Factor app for 2 weeks for free track your weight and what you eat for those two weeks and the app will give you an extremely accurate number for your metabolic rate and your maintenance calories the app will also update and adjust your calories throughout your bulk as your metabolism adapts and it's the app that I've been using to run my own nutrition for this entire year I'm a part owner and I help develop the app so if you're interested I'll have a little more info about that at the end okay so that's how you set your calories up but you obviously shouldn't get all those calories from donuts and ice cream you need to eat enough protein to lay down new muscle tissue the best science shows that 0.7 to 1 g of protein per pound of body weight is plenty when bulky so I weigh 180 lb and I've been eating about 170 g of protein per day on my bulk you also want to monitor your fat intake on your bulk too little dietary fat can lower testosterone but too much fat can lead to excess fat gate despite what low carb Advocates say dietary fat is much more easily stored as body fat than carbohydrate is that's because fat is already fat while carbs have to be converted to Fat through a fairly uous biochemical process before they can be stored as fat so I'm not a fan of high fat bulks or low fat bulks ideally 20 to 30% of your total calories should come from fat based on these numbers going back to me in my 3,000 calorie bulk I should eat between 65 and 100 G of fat per day I usually land around 80 g per day so this is my protein this is my my fat and then I just fill in any remaining calories with carbs pretty easy all right and this is what a full day of bulking looks like for me I usually wake up at around 7:30 a.m. and I have an energy drink or a coffee coffee is probably the healthier option since it's packed with antioxidants and has a huge body of science showing health benefits I think energy drinks are also okay in moderation I'm not hungry when I first wake up so I end up eating breakfast at around 10:00 a.m. which is 1 cup of egg whites and one whole egg scrambled with one slice of turkey bacon mushrooms onions and spinach and I put 15 G of shredded cheese on top of the eggs and for carbs I have 60 G of oats with almond milk and 100 G of blueberries I also take most of my supplements with this Meal which I'll come back to in a minute if it's a busy morning and I don't have time to cook I'll just have a protein shake with some oats at 1:00 p.m. I have my pre-workout meal which is 100 G of lean ground turkey jasmine rice Greek yogurt shredded cheese Sriracha a kiwi and 100 G of blackberries after this meal I have a pre-workout supplement and then I train about an hour later after training I have a protein shake and a banana and then in the evening my diet becomes a lot more flexible some nights I'll order a peita or a burrito sometimes I get sushi or Thai food but it's often chicken potato sour cream and broccoli with a side of roasted sunflower seeds for healthy fats then before bed it's Greek yogurt honey and peanut butter with a side of popcorn if I have any calories left over I usually have something sweet like some candy or chocolate again when you track your Macros you can be a lot more flexible with the foods you eat and you can even eat some junk food as long as it fits in your daily totals and remember when you're bulking you have a higher caloric intake than usual that means you need to make sure that you're putting those calories to use in the gym a lot of people make the awful mistake of slacking off with their training on their bulk and I've done this in the past myself but this is a Surefire way to guarantee that you gain more fat than muscle after all it's your training that's going to trigger new muscle growth as important as your diet is your training is what will determine how much muscle you gain on your bulk so you need to take it seriously if you're still in your first year of training focus on the basics when proper technique for the basic EX ex sizes and learn to push yourself hard with good form splits don't really matter at this point bro split push both legs upper lower full body they all work pick what you like just try to be in the gym at least 3 days per week with four to five gym days per week likely being most optimal if you're an intermediate meaning you've been training hard for 1 to 3 years you can start to add some more volume as an intermediate you should be doing more sets than you did as a beginner but intensity is still the most important thing at this stage you should be doing around 8 to 15 sets per muscle per week big complex muscles like the back seem to tolerate more volume so you might want to do more sets for your back than you do for your chest I'll put a table up here on screen from my upcoming book the muscle ladder breaking down weekly set volumes that I recommend for each muscle at this stage it might also be smart to ditch the Bro split for one of the other options since it'll help you avoid junk falling if you're an advanced trainee meaning you've been training hard and smart for more than 3 years you could consider running a specialization program for your bulk this is when you increase your training volume for just one or two muscles at a time for example if you need to bring up your delts you could add 20 to 40% more volume for your shoulders each week so if you currently do 15 sets for your shoulders each week increase that to 18 to 20 sets per week this is also in things like length and partials my reps and advanced exercise techniques can help you e those extra marginal gains should you do cardio on a bulk I think for the most part yes you should the idea that cardio kills your gains is based on outdated lowquality science staying in good cardiovascular shape as you bulk is not only good for your health it also help you tolerate more volume if your cardio sucks you're really going to struggle through your leg days you may not be able to get as many reps as you could have gotten if your conditioning was better that's because your heart and lungs will give out before your legs do that said if you work a very active job such as in construction or as a server you may not need any extra cardio at all but if you work a desk job you probably should do some extra cardio I personally do two or three moderate intensity cardio sessions per week by going for a brisk walk or playing some late basketball for supplements I've talked about all the basic boring stuff in other videos so I won't go into those details again here the basic advice is to Take 5 G of creatine per day use protein powder as you need it and consider taking about 200 Mig of caffeine before your workouts as long as it doesn't mess with your sleep but on this bulk there are a few other things that have been taking I take six fish oil capsules every morning which gives me two grams of combined EPA and DHA eating more Omega-3s is one of the easiest things you can do to improve nearly every facet of your health from your heart to inflammation to brain function and anxiety I've also been taking a magnesium supplement before bed low magnesium is associated with low testosterone and poor sleep two things that are very important for muscle gain I also take a vitamin D supplement because I don't get a lot of sunlight low vitamin D is also linked with low testosterone so if you aren't getting enough naturally supplementation is an easy way to prevent your test levels from dropping other than that I take a basic multivitamin in the morning with 600 Mig of ashwaganda root although I don't really feel like there's quite enough safety data on ashwaganda yet for me to recommend it broadly and if you guys want to optimize your bulk like I've done this year I'd strongly recommend downloading macro fact you can try it out for 2 weeks for free if you use code Jeff when you download the app it's the only app that uses science-based algorithms to figure out your exact metabolism and then it updates your nutrition each week just like a coach would it really is like having me as your own personal nutrition coach but for a tiny fraction of the cost it also comes with all kinds of amazing tracking tools so you can monitor not only your calories and macros but also every vitamin and mineral that way you can figure out what foods you need to eat more of and what foods you need to eat less of to improve your health we just hit 200 100,000 active users and we have an amazing engaged community on Facebook and Reddit that you can be a part of if you have any questions about the app you'll always get an answer there so I'll put a link to the free trial in the description box down below or you can scan this QR code over here next to my head and try it out for yourself don't forget to leave me a thumbs up if you enjoyed the video subscribe if you haven't already and I'll see you guys all here in the next one

#Bulk #Pro #Science

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39 Comments
  1. Hope you guys enjoy the video!

    If you want to commit to a proper, optimized bulk like I’m doing, check out my nutrition app MacroFactor. It’ll adapt to your metabolism and coach you through the entire process: https://bit.ly/jeffmacrofactor

    Back with another video soon! Aiming for 3 uploads in December.

  2. Bro you got the money to bulk like that

  3. 😭 I'm so insecure, while bulking, I did some dirty and I blew up… I'm keeping my calories but I don't wanna eat any more 😢

  4. Would I be considered a beginner if I’ve been lifting on & off for ten years but just now getting serious with lifting, meals, sleep and cardio?

  5. I have to cut first. I'm 5'5" amf was 200lbs til i just cut down to 179. I will probably keep cutting until i get down to 170. Back in 2014 at my best shape I was 170 under 20% body fat. Once I get down to 170lbs I will stop cutting and just main gain. Being shorter then coach greg I should weigh anywhere near him if I don't even look as good as him.

  6. well i weight 70kg on 175cm and i have alot fett on my belly so im unsure should i bulk or not or should i cut first ?

  7. Should I do bulking when my bodyfat is already over 25? Thanks

  8. More like… How To Bulk Like a Pro (Using Sarms, Test, and other steroids) lol if this guy is natty, grizzly Adam’s had a beard.

  9. The way my eyes bulged at 4,500 calories 🤯 I’m here struggling to hit 2,500! 😂

  10. Does anybody have suggestions for someone with CF who needs more fats in their diet but wants to bulk like this? i am sure I would be different then jeff and most normal people but maybe not?

  11. Poor me. Due to real budget restrictions, I couldn't hit my daily protein intake everyday, though I eat protein on a day-to-day basis. I train hard also, but just to my diet, I see little progress on my muscles, but you know, I don't want to lose the strength that I have

  12. When eating Protein should the amount be your current weight or the goal weight?

  13. What are you doing for living

  14. How long to last a bulk?

  15. The other issue with 'dirty bulk' or any bulk phase causing massive increase in body fat is that it's also accompanied by increased inflammation in your liver as well as your joints. Inflamed joints are more prone to injuries. And extended inflammation can lead to an increase risk of developing tendinitis… Once you achieve tendinitis, have fun on your next bulking phase 👍

  16. guys i need help i am 18 years old with 172cm tall and 53kg when i calculated the calories i need daily with exercise it came out o be 2600_2700 so if i want to bulk i will need to take 3000 cal like jeff so is this normal or am i calculating wrong?[Please whoever wants to answer should have an understanding for the topic]

  17. How do i bulk if my daily calories vary 2400-2800 cal?
    Do i have to eat same ammount of cal every day or daily cal+5-10%?

  18. I'm trying a whiskey bulk….

  19. I' m confused on if this is for building bigger muscles, like for bodybuilding, or if it's for strength like powerlifting. I don't know how muscles work but can someone let me know. I am wanting to get stronger and I know my muscles will get bigger either way but I'm focusing on strength not just the size.

  20. No fat gain on a 4,300 calories diet?

  21. Take a lazyest job and train every day 😂

  22. Who the fuck has time for this shit dude. Yall must have nothing going on.

  23. I know I’m late but does anyone know how many grams of the ingredients are in each meal?

  24. Moral of the story don’t cut and just do this for the rest of your life

  25. But i litterly want 4 percent body fat. But then i also wanan look big.. AAAAA

  26. It's hard for me to prepare so many meals and have the time to sit and eat them. After I tracked it all, it's not for busy stoned ppl that try to bulk some muscle 🙂

  27. @jeffnippard it’s interesting that you support science-based community but you also promote fish oil. Can you do a video on this and break it down? I’ve been told fish oil is terrible for you by some peers that are health freaks. Thank you!

  28. Macaulay Culkin got big and grew a beard. Those pizzas he ordered off his parent's credit card really must've helped calorie surplus

  29. Macaulay Culkin got big and grew a beard. Those pizzas he ordered off his parent's credit card really must've helped calorie surplus

  30. 3:08 watching Sam sulek while eating goes hard 😂

  31. Almond milk is packed full of soy, try raw milk, it's natural fat is more optimal for gains

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