What exercises are there that require no fitness equipment, weights or dumbbells to exercise my chest muscles?

What exercises are there that require no fitness equipment, weights or dumbbells to exercise my chest muscles?
the reason i'm asking is because everytime i do a pushup my elbows crack and if i keep doing them it'll make em worse so please do you know any besides pushups?

Posted by juan
They arent none

Posted by marie=)
You should do sit-ups, and crunches.

Posted by jokesbyjen
Lay on your back and hold two really heavy textbooks, spread your arms to your sides, and life them straight up above your chest, meeting high above you- keep your arms straight the whole time, bring them out to your sides again. Repeat

Posted by steve h
isometric

Give your answer to this question below! More vigorous exercise can help improve fitness of the heart and lungs, which can provide even more consistent benefits for lowering heart disease risk. ... Exercise Fitness Blog

---

Orignal From: What exercises are there that require no fitness equipment, weights or dumbbells to exercise my chest muscles?