下班后去鍛煉身體有什么好處

今天的這段對話，在討論鍛煉，
 
下班后去鍛煉身體有什么好處
 
來聽今天的講解:
 
A: Why don't you come over for dinner tonight?
 
你今晚過來吃飯怎么樣？
 
B: I'd like to, but I don't feel up to it.
 
我想去，但是我覺得沒有力氣去了。
 
A: What's wrong? Are you sick?
 
怎么了？你生病了嗎？
 
B: Not really. I'm just so tired these days. I just feel like going home and taking a nap after work.
 
沒有。這些天我只是覺得很累，下班后就想回家小睡一會兒。
 
A: You need to exercise more. It'll give you more energy.
 
你需要多鍛煉這樣精力才能充沛。
 
B: Maybe you are right. It's about time I started to hit the gym again.
 
也許你是對的，我也該再堅持去健身房鍛煉了。