1, cycling in the gym, the main exercise muscles include quadriceps femoris, gluteus maximus, posterior thigh muscle, soleus muscle and gastrocnemius muscle on the calf, and biceps, triceps and latissimus dorsi of both arms will also get some exercise.

2. Bicycle is a kind of small land vehicle driven by human pedaling. It usually has two wheels, but it also has three wheels (mainly used for freight transportation, which is rare).

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