When I got serious about lifting again, after taking time off for about 8 months, I measured my chest and arms for fun. Both measurements were taken cold, pre workout. I took measurements today, again cold, and this is what I found! 3 months ago....current chest 41.33 in chest 44.1 in 3 months ago....current biceps 12.9 in biceps 16.5 in I can't beleive I have added over 3.5 inches to my biceps!!!