第124单元：睡前两小时不要运动

　　Regular exercise is great for inducing a good night's sleep,

　　有规律的运动可促成一夜好眠，

　　but you may have trouble sleeping if you hit the sack less than two hours after exercising.

　　但如果你在睡前两个小时内运动的话，可能就会睡不着。

　　Heart-pumping activity tends to energize you.

　　因为运动后的快速心跳会使你感到精力充沛。