50 crunches
10 wide arm push ups
50 crunches left elbow to right knee
10 close arm pushups
50 crunches right elbow to left knee
10 wide arm push ups
50 back crunches
10 close arm pushups

should i do 15 instead of 10 pushups inbetween crunches

do 20

i will do my best

do pushups harden the chest/ expand it?

what exactly do they do?

I though push ups just strengthened the arms..........