听力篇章_2

They will help one reduce fear.

They should become so popular.

They will be less challenging after a time.

They should cover so many different types.

To break one’s ultimate limits.

To stop being extremely afraid.

To avoid dangerous mistakes.

To enjoy the sports to the full.

By allowing our motivation to be at an all-time high.

By stopping us hurting the same muscles repeatedly.

By burning as many as 300 calories per hour.

By enabling us to get an all-over workout.

CET4