騎自行車
bicycle riding
A: Mary,I'd like to join the bicycle club.
B: Very good!It's said riding a bike may keep us younger.

健身俱樂部
health/fitness club
A: Why did you join a health club?You are not over weight.
B: I think I am too skinny.
A: But I thought a health club is designed for people who are overweight.
B: No.It is for people who want to stay fit and be healthy.

瑜伽
yoga
A: How do you keep so fit?
B: I do yoga three times a week.

我賭中國贏。
I bet China will win the game.
A: There is a live show of a football match on this Saturday.Japan against China.
B: I bet China will win the game.