Ever since Basil Fawlty moaned about "the British Leyland Concerto in four movements, all of them slow with a four-hour tea break in between", the car industry has been an emblem of national decline.
If you run hard every day, you will just continually break your muscles down, and improvement will be slow and difficult -and it could lead to burnout or injury.
如果你每天都跑到精疲力尽，你会中断肌肉的生长，提高肌肉将是更慢更难的事情，甚至肌肉会因此受到伤害。
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If you break up the flow, it will slow you down considerably.