Actually push ups and sit ups will help his draw. Its not just your back muscles that do the pulling. Without strong antagonists and core muscles there wouldn't be a pull. To ever motion there is an opposing force. IE -- the bicep curl -- Yes your biceps do most of the pulling but your triceps supports the bicep and actually helps stabilize on the downward movement. That bow band is a great thing to get. I do similar stuff with a different type of band but its all works the same muscles. I pull 70 lbs easy -- but then again I am a 6'3 285 lb ex college offensive lineman HAHAA

Bigcountry: I bet I can pull that bow back HAHA -- but you are right -- my buddys dad has a longbow at 66# and it is a BITC- to draw -- I don't know how he does it all the time when he is only 5'8 165ish