学着做一做电视或者网上的有氧活动，或者跟着自带的体操录影带和DVD做一下。

Follow an aerobics program on TV or online, or play an exercise video or DVD from home.

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试试有氧活动。学着做一做电视或者网上的有氧活动，或者跟着自带的体操录影带和DVD做一下。

Try aerobics. Follow an aerobics program on TV or online, or play an exercise video or DVD from home.

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你也可以在水底走路或做抬腿或转手臂的体操，研究显示，在水里做有氧运动能以较少时间达到在陆上做同样的效果。

You can also "take a walk" underwater or perform calisthenics like leg lifts or arm circles. Research shows that water actually offers an equal aerobic workout in less time than one on dry land.

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