WHAT'S INSIDE: DIET & FITNESS

HowStuffWorks offers guidance for developing an exercise routine that will help you get in shape and stay healthy. Learn about diet and fitness and get tips from professional trainers.
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FEATURED: DIET & FITNESS
Which activities burn the most calories?

Laughter isn't just an external expression of hilarity, it's actually a green exercise that can help you to burn calories, improve your immune system, and induce a stress-relieved state.

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Have people ever really eaten tapeworms for weight loss?

In recent history, rumors have circulated that if a person were to intentionally swallow a tapeworm the excess pounds would simply melt away. Could a tapeworm be the weight-loss solution that you're looking for?

Building Muscle Mass

Many people pursue weight training to build muscle mass, but did you know that muscle mass can actually help increase your metabolism and even your mood? Make the most of your current workouts with these basic principles for building muscle mass.

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