hunhun has said it already. I usually does 4 to 6 minutes
所有跟贴·加跟贴·新语丝读书论坛
送交者: steven 于 2007-02-15, 13:32:20:
回答: 什么才是proper warm-up?Steven, Latino2: foreplay not included. 由 fuzzify 于 2007-02-15, 12:54:04:
warm-up, and that usually brings my heart rate to 50 to 60% of my max heart rate.
所有跟贴:
加跟贴