Should I do cardio if I want to gain?

[groundzero]

Hello,
I'm about 5'7 145lbs, and I want to gain muscles and weight. Is it manditory to do cardio such as running on the treadmill. or will that keep me skinny? Open to any suggestions. Thanks!

 

[Warboss Alex]

At that size, no.

Work out for a few months, see the direction your body takes in terms of muscle mass and fat accumulation and then decide.

When you get bigger and need to eat even more to grow then start worrying about your waistline..

 

[semag]

*looks at his waistline* damn... I need to worry.