Bulking Diet Basics: How to Gain Weight Smart

What is Bulking?

Bulking is a training phase where the goal is to build muscle mass by consuming more calories than you burn. It's a necessary phase for anyone who wants to gain significant muscle mass.

Why is a Calorie Surplus Necessary?

Building muscle mass requires:

• Energy - muscle tissue construction is an energy-intensive process
• Building materials - proteins for amino acids, carbohydrates for glycogen
• Hormonal environment - calorie surplus supports anabolic hormonal profile

Without a calorie surplus, muscle building is significantly slower or impossible.

Calculating Calorie Needs

Step 1: Calculate Basal Metabolic Rate (BMR)

Use the Mifflin-St Jeor formula:

Men: BMR = (10 × weight kg) + (6.25 × height cm) - (5 × age) + 5 Women: BMR = (10 × weight kg) + (6.25 × height cm) - (5 × age) - 161

Step 2: Calculate Total Daily Energy Expenditure (TDEE)

Multiply BMR by activity coefficient:

Step 3: Add Calorie Surplus

Lean bulk: TDEE + 200-300 kcal

• Slower but cleaner results
• Less fat accumulation
• Suitable for most

Moderate bulk: TDEE + 300-500 kcal

• Faster results
• Some fat accumulation
• Suitable for hardgainers

Aggressive bulk: TDEE + 500-1000 kcal

• Fastest results
• Lots of fat accumulation
• Only for very skinny beginners

Practical Example

80 kg man, 180 cm, 30 years, trains 4x per week:

• BMR = (10 × 80) + (6.25 × 180) - (5 × 30) + 5 = 1780 kcal
• TDEE = 1780 × 1.55 = 2759 kcal
• Bulking calories = 2759 + 300 = ~3060 kcal

Macronutrient Distribution

Protein

Amount: 1.6-2.2 (Stokes et al., 2018) g/kg body weight

For an 80 kg person: 128-176g protein daily

Why this range?

• Below 1.6 g/kg - muscle protein synthesis not optimal
• Above 2.2 g/kg - no additional benefit

Best sources:

• Chicken, turkey, beef
• Eggs
• Fish (salmon, tuna)
• Dairy products
• Protein supplements

Carbohydrates

Amount: 4-6 g/kg body weight (or remaining calories)

For an 80 kg person: 320-480g carbs

Why so much?

• Main energy source for intense training
• Refills glycogen stores
• Supports anabolic hormonal profile
• Protein-sparing effect

Best sources:

• Rice, potatoes, pasta
• Oatmeal
• Bread
• Fruits
• Legumes

Fats

Amount: 0.8-1.2 g/kg body weight

For an 80 kg person: 64-96g fat

Why are fats important?

• Hormone production (testosterone!)
• Fat-soluble vitamin absorption
• Energy storage
• Nervous system function

Best sources:

• Nuts, seeds
• Avocado
• Olive oil
• Fatty fish
• Egg yolks

Practical Meal Plan

Sample Day ~3000 kcal

Breakfast (700 kcal)

• 100g oatmeal
• 300ml milk
• 1 banana
• 30g nuts
• 2 eggs

Lunch (800 kcal)

• 200g rice (dry weight)
• 200g chicken breast
• Vegetables
• 1 tbsp olive oil

Snack 1 (400 kcal)

• 200g cottage cheese
• 100g berries
• 30g almonds

Pre-workout (300 kcal)

• 1 banana
• 30g protein powders

Post-workout (400 kcal)

• 40g whey proteins
• 60g dextrose/maltodextrin

Dinner (600 kcal)

• 200g potatoes
• 200g salmon
• Vegetables
• Salad with olive oil

Before bed (300 kcal)

• 30g casein
• 1 tbsp nut butter

Bulking Rules

1. Weight Monitoring

Goal: 0.25-0.5 kg per week

• Weigh daily, calculate weekly average
• If weight doesn't rise - add 200 kcal
• If rising too fast (>0.5 kg/week) - reduce 200 kcal

2. Progressive Overload in Training

Bulking only works if:

• Workouts are intense
• Progressive load or reps
• Adequate recovery

Calories without training = fat!

3. Eat Regularly

• 4-6 meals per day
• Don't skip meals
• Plan ahead

4. Prioritize Protein

• Start each meal with protein source
• Track to ensure adequate intake
• Use supplements if needed

5. Train Before Bigger Meals

• Post-workout the body is most ready to use nutrients
• Highest calories around training

Lean Bulk vs Dirty Bulk

Lean Bulk

Calorie surplus: +200-300 kcal Fat content in food: Moderate, quality sources Food choices: Mostly whole foods, little processed food

Pros:

• Less fat accumulation
• Shorter cutting phase later
• Healthier
• Feel better

Cons:

• Slower progress
• Requires more discipline
• Less "fun"

Dirty Bulk

Calorie surplus: +500-1000+ kcal Food choices: Anything goes, including fast food, sweets

Pros:

• Fast weight gain
• Psychologically easier
• Suitable for very skinny people

Cons:

• Lots of fat accumulation
• Long and hard cut
• Unhealthy
• Feel bad

Recommendation: Lean bulk is better for 90% of athletes!

Supplements for Bulking

Essential (priority)

1. Whey protein - Convenient way to get protein
2. creatine supplements - Proven muscle mass and strength builder
3. vitamin D supplements - If little sun exposure

Useful (additionally)

4. Mass gainer - For hardgainers who struggle to eat
5. omega-3 supplements - Anti-inflammatory, overall health
6. Magnesium - Recovery, sleep

Not Necessary

• BCAA (if getting enough protein)
• Testosterone boosters (don't work)
• Most "mass building" products

Common Bulking Mistakes

1. Too Large Calorie Surplus

Problem: Body can build maximum ~200-300g muscle per week Solution: Stick to lean bulk (+300 kcal)

2. Too Little Protein

Problem: Plenty of calories but no building materials Solution: Prioritize protein, at least 1.6g/kg

3. Poor Training Plan

Problem: Calories go to fat, not muscle Solution: Progressive overload, 4-6 workouts per week

4. Impatience

Problem: Expecting fast results Solution: 0.5 kg of lean muscle per month is a good result!

5. Forgetting to Eat

Problem: No appetite, skipping meals Solution: Plan ahead, use reminders, eat even when not hungry

When to End Bulking?

Indicators:

• Body fat percentage rises above 18-20% (men) / 28-30% (women)
• Losing motivation
• Health indicators worsening
• Achieved desired mass

Typical Cycle:

Beginner: 6-12 months bulking, then 2-3 months cutting Advanced: 3-4 months bulk, 1-2 months cut

Summary

Key Bulking Points:

1. Calorie surplus is necessary - 200-500 kcal above TDEE
2. Protein priority - 1.6-2.2 g/kg
3. Carbs for energy - 4-6 g/kg
4. Fats for hormones - 0.8-1.2 g/kg
5. Track progress - 0.25-0.5 kg/week
6. Train intensely - progressive overload
7. Lean bulk > dirty bulk - better for most

MaxFit Recommends:

Start with conservative calorie surplus (+300 kcal), track progress and adjust accordingly. Invest in quality whey protein and creatine. Most important is consistency - 6+ months of dedication yields results!

This article is informational. Individual needs may vary. For health issues, consult a doctor.

References

1. Iraki, J., Fitschen, P., Espinar, S., & Helms, E. (2019). Nutrition recommendations for bodybuilders in the off-season: a narrative review. Sports, 7(7), 154.
2. Slater, G.J., Dieter, B.P., Marsh, D.J., et al. (2019). Is an energy surplus required to maximize skeletal muscle hypertrophy associated with resistance training. (Slater et al., 2019) Frontiers in Nutrition, 6, 131.
3. Stokes, T., Hector, A.J., Morton, R.W., McGlory, C., & Phillips, S.M. (2018). Recent perspectives regarding the role of dietary protein for the promotion of muscle hypertrophy with resistance exercise training. Nutrients, 10(2), 180.
4. Helms, E.R., Aragon, A.A., & Fitschen, P.J. (2014). Evidence-based recommendations for natural bodybuilding contest preparation: nutrition and supplementation. Journal of the International Society of Sports Nutrition, 11, 20.
5. Ribeiro, A.S., Nunes, J.P., Schoenfeld, B.J., Aguiar, A.F., & Cyrino, E.S. (2019). Effects of different dietary energy intake following resistance training on muscle mass and body fat in bodybuilders: a pilot study. Journal of Human Kinetics, 70, 125-134.

Browse our mass gainer selection at MaxFit.ee →

See also:

• Winter Bulk Guide for Estonia — Gain Muscle During the Dark Months
• Meal Prep Guide for Busy Athletes

Read more: Mass Gainer: A Complete Guide to Weight Gain Supplements