Fat is less dense than muscle. Instead of training arms, gaining 5lbs of muscle and having jacked 16" arms, OP could just eat like shit, keep doing madcow, gain 2lbs of fat and also have 16" arms.
Problem solved
1 Like
At 6’ you’re gonna need more than 16” arms to look jacked.
3 Likes
Sad, sad truth 
1 Like
Have you heard of rich pianas 8 hour arms workout?
Yep…and even at 5’9" I don’t consider my 16.5" arms jacked. At 17" maybe, if I can get there at my age :^ /
1 Like