Im only 5'2 1/2 And iv'e been doing pushups for a year now, and i have a big chest for my height. but i want it bigger, and iv'e been trying more and more pushups, and iv'e been doing like .. up to 70, and i dont feel the burn in my pecks, i just lose my breath, and it seems i cant get my pecks any bigger by doing pushups. and i have been doing them like, when i get close to the ground my hands are under my arm pits. and i just doint feel the muscle rip anymore. HELP!?!