How do I get bigger?

Getting bigger means adding muscle mass, which requires progressive resistance training, a small calorie surplus, and enough protein. For most trainees past the beginner stage, roughly 0.25 to 0.5 percent of bodyweight gained per week is a realistic rate.

Set the calorie surplus carefully

A surplus of about 10 percent above maintenance is enough. Larger surpluses do not accelerate muscle gain, because the rate at which you can build tissue is capped; they simply add fat that has to be dieted off later. For an 80 kg person that is often in the region of 250 to 400 extra calories a day.

Train for size, not just effort

• 10 to 20 hard sets per muscle per week, split across two or three sessions.
• Sets stopped one to three reps short of failure, in the 6 to 15 rep range for most work.
• Compound movements first, isolation work afterwards for anything lagging.
• A recorded progression rule so weights and reps actually climb.

Eat with structure

Set protein at roughly 1.6 to 2.2 g per kg, fill the rest with carbohydrate to fuel training and enough fat for health, and adjust based on two to four weeks of scale trend rather than a single reading. If bodyweight is not moving over three weeks, add around 200 calories a day and reassess.

Track the right things

Weekly average bodyweight, tape measurements at the arm, chest, waist, and thigh, photographs every four weeks, and gym performance together give a far clearer picture than any one of them alone. Rising bodyweight with no change in lifts or measurements usually means the surplus is too aggressive.

Common mistakes

Eating far more than needed and calling it bulking, changing programmes before any of them produce results, and expecting linear weekly progress are the three big ones. Growth is slow enough that four-week comparisons are the shortest useful window.

If you are also trying to lose fat

Doing both at once is possible for beginners and for people returning after a layoff, but it is slower than focusing on one. Choosing a direction and committing to it for three to four months is usually more productive. See Hypertrophy and Muscle Growth for the training side.