Eating more protein while lifting weights for 10 weeks is linked to bigger muscles and less muscle loss, specifically in the thigh muscle.

If you lift weights and eat lots of protein, you’ll likely build more muscle and get stronger than if you just do one or the other—because together, they work better than alone.

If middle-aged Japanese women who are doing strength training start eating more protein at breakfast—especially if they weren’t eating much before—they’re likely to gain more muscle.

When young guys who don't normally lift weights push their muscles to the max during workouts and eat enough protein, they build bigger muscles no matter how heavy or how much they lift, with their thigh muscles growing 3-7% bigger in about 10 weeks.

When athletes are trying to lose weight by eating fewer calories, eating more protein (about 2.3 grams per kilogram of body weight) helps them keep more of their muscle compared to eating less protein (about 1 gram per kilogram).

Eating more calories helps keep your leg muscles from shrinking, even the ones you aren't directly working out during strength training.