The Mechanics of Muscle Growth
When you lift weights at the gym, you are not actually building muscle—you are tearing it down. You are creating microscopic tears in your muscle fibers.
The actual "building" of muscle happens while you are resting, through a biological process called Muscle Protein Synthesis (MPS). Your body uses the amino acids from the protein you eat to repair those micro-tears, making the muscle fiber thicker and stronger than before. If you lift heavy weights but fail to eat enough protein, your body cannot repair the damage, leading to muscle loss and extreme soreness.
How Much Protein Do You Actually Need?
The Indian Council of Medical Research (ICMR) recommends 0.8g of protein per kg of body weight for a sedentary person just to stay alive.
If you are actively lifting weights to build muscle, that number doubles.
Science universally agrees that optimal muscle growth occurs at an intake of 1.6 to 2.2 grams of protein per kilogram of body weight.
Example Calculation:
- • You weigh: 75 kg
- • You lift weights 4x a week
- • Your Goal: 75 x 1.8g = 135 grams of protein daily
The Golden Rule: You Can't Build a House Without Bricks (or Energy)
Protein is the bricks. Calories are the construction workers.
Even if you eat 200g of protein a day, if you are not eating in a Calorie Surplus, you will not build significant muscle. Muscle tissue is very metabolically expensive for the body to create and maintain. Your body will only build new muscle if it feels it has an abundance of energy (a surplus of calories).
If you want to get big, you must calculate your TDEE (Total Daily Energy Expenditure) and eat 300-500 calories above it every single day.