Nutrition Basics for Strength: Calories, Protein, and TDEE
You cannot out-train poor nutrition. Learn how to estimate your TDEE, set calories for your goal, and hit the protein target that supports strength and muscle.
Strength training tells your body to adapt. Nutrition provides the raw material to do it. You do not need a complicated diet to get stronger, but you do need to get a few fundamentals right: total calories, protein, and consistency. This guide covers the essentials without the fads.
Start with your TDEE
TDEE stands for Total Daily Energy Expenditure — the number of calories you burn in a day. It is the anchor for every nutrition decision. It is built from your Basal Metabolic Rate (the energy to keep you alive at rest) multiplied by an activity factor.
TDEE = BMR × activity factorA common way to estimate BMR is the Mifflin-St Jeor equation, which uses your weight, height, age, and sex. Multiply the result by an activity factor (roughly 1.2 for sedentary up to ~1.7 for very active) to get your TDEE. GYMKA's built-in metabolism calculator does this for you.
Set calories for your goal
- Build muscle (lean bulk): eat slightly above TDEE, around +200 to +400 calories per day.
- Lose fat (cut): eat below TDEE, around −300 to −500 calories per day.
- Maintain / recomp: eat near TDEE and let progressive overload drive slow body-composition change.
Aggressive deficits or surpluses backfire. A large deficit costs you strength and muscle; a large surplus adds mostly fat. Small, sustainable adjustments win over months.
Prioritize protein
Protein is the single most important macronutrient for lifters. It supplies the amino acids your body uses to repair and build muscle after training. A widely supported target for people who lift is roughly 1.6–2.2 grams of protein per kilogram of bodyweight per day.
protein (g) ≈ 1.6 to 2.2 × bodyweight in kgRound it out
- Carbohydrates fuel hard training — do not fear them, especially around workouts.
- Dietary fat supports hormones; keep it moderate, not minimal.
- Hydration and sleep quietly determine how well everything else works.
Consistency beats perfection
The best diet is the one you can repeat. Hit your calorie ballpark and protein target most days, track your bodyweight trend over weeks rather than reacting to daily fluctuations, and adjust slowly. Combined with progressive overload in the gym, that is genuinely all most people need to build strength and change their body.
Put it into practice
GYMKA logs every set, estimates your 1-rep max, and shows your strength tier for each lift automatically. It is free to start.
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