No pain, no gain 没有付出没有收获
This expression was made famous by actress Jane Fonda in 1982 when she produced a series of aerobics exercise videos. In these videos Fonda would use this catchphrase "No pain, no gain" for the concept of working out past the point of experiencing muscle aches. This phrase is often adopted by the physical fitness community. It expresses the belief that solid large muscle is the result of training hard and suffering sore muscles repeatedly. The more pains one gets the more muscles he can develop.
这一英语常用语通常用来鼓励人努力以实现目标，这相当中国人说 "世上无不劳而获的事"， "一分耕耘，一分收获“ 。我的好友 Sara 正好用它为她的博的座右铭,以提醒自己努力学习英语。