Skinny to Muscular - Challenge app for iPhone and iPad

Hardgainers are those naturally skinny folks who, no matter what they eat or how often they hit the gym, generally seem to stay the same body weight and size. These people are often referred to as the somatotype "ectomorph." If that sounds familiar, here are some workouts for you.

We added the workout plans all skinny guys have been waiting for. Use our 30-day routines to help you bulk up and gain muscle once and for all. Follow this tough but rewarding training plan to shock your body into burning fat and building lean muscle to transform your physique.