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Cardio exercises

By: Steve Pollak on Jan. 20, 2011, 11:25 a.m.
Swimming — Cardio exercises

Photo: (Jim Bahn/Flickr)

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Swimming, by many, is considered the best cardio exercise because not only does it increase lung capacity and strengthen the heart, it also helps build your muscles. A 140-pound person who swims for 30 minutes will burn in excess of 200 calories and develop major muscle groups like latissimus dorsi (these are the upper-back “bat wing” muscles that Olympic swimmers have). A good warmup for swimmers is arm circles, brought into vogue by Michelle Obama. Reverse arm circles are very important to promote muscular balance of the deltoids (shoulders).