How big should the lean-gain surplus be?

200–300 kcal/day above maintenance. Bigger surpluses accelerate gain rate but tilt the ratio toward fat — a hard rule of thumb: aim to gain 0.25–0.5% of bodyweight per week, no faster.

Lean gain is a muscle-building protocol running a modest calorie surplus (~200–300 kcal) with high protein. Nutrascia's lean-gain stack: Pro Whey post-workout, Mono Pure daily, Advanced Casein at night. Grow without bloating.