Medically reviewed by Kayla Girgen, RD Gaining weight and building lean body mass (muscle) requires thought and planning. People who strive to gain healthy weight include athletes, bodybuilders, ...

Eating too fast is linked to several conditions, including obesity and metabolic syndrome. Learn how it affects your body and ...

The first time I took creatine, I gained 10 pounds in two weeks. At the time, I was ecstatic. I was in high school, and my goal, like many boys my age, was to put on as much weight—ideally ...