Building muscle and speed I’m about 6’3 and 175lbs rn. I’m staring to get into weight lifting to get to around 190lbs-200lbs of purely muscle. Im skinny and the moment with very skinny legs so I want to focus more on lower body. I’m very fast especially for a guy my height but is it just because of my skinny frame?  With me working out and gaining weight, would I lose some pace?