体育锻炼exercise可数吗

　　Diet and exercise are obviously important.

　　显然，饮食和运动是重要的。

　　You shouldn't exercise on a full stomach.

　　你不应该吃饱了就运动。

　　Which is better exercise ─ swimming or tennis?

　　游泳和网球，哪种运动比较好？

　　The heart responds well to energetic exercise.

　　心脏对剧烈运动反应良好。

　　Deep breathing exercises will help you relax.

　　深呼吸运动有助于放松自己。

　　Exercising regularly will pay dividends in the end.

　　经常运动最终会对身体大有好处的。