Like all gyms, they have all sorts of things to help build up muscles in different parts of the body, like applied bicycles, chest stretching machines, and running machines.
2
他过去常到健身房锻炼，以使他的肌肉强健。
He often went to the gym to harden his muscles.
3
和在健身房锻炼一样，每组动作都锻炼特定的肌肉群。
Each exercise work on specific muscles, pretty much like when you are working in a gym.
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