Some of the images used on this site, are royalty free. Here I have given credit to those websites, I have acquired those images from per their usage agreement.
Hulk brought to you by: stock.xchng
Arm anatomy drawings, are brought to you by: psylala @ deviantart.com
Sketched muscle man, is brought to you by: billy2toes @ deviantart.com
She-Hulk is brought to you by: barisyilmaz @ deviantart.com
Muscle Guy model brought to you by: rera-stock
Educational Images; derived from Wikimedia Commons under the license agreement per image used.