-35°C, 外面走路, 10分钟后, 眉毛开始挂霜, 无解.
返回, 循环训练.
循环, 重复四次, 每次包括
Jogging in place, 50
High knees, 50
Backwards lunges, 25
Side lunges,25
Squats, 25
Sit ups , 25
Push-ups, 25