Read this tip to make your life smarter, better, faster and wiser. LifeTips is the place to go when you need to know about Weight Lifting and other Muscle Building topics.
It's unlikely that any weight gain will be 100% muscle, but if you've been lifting weights and haven't changed your eating habits, you can be confident your weight gain is mostly muscle. Even if you've been eating a little more, you probably won't gain much fat unless you've added a lot of high fat junk food.
|Jennifer Mathes, Ph.D.|