Why endorphins (and exercise) make you happy

Photos: Get in a workout this winter
Get in a workout this winter – Winter is here -- and so is the cold air that makes you want to snuggle up on the couch with a cup of hot cocoa. Many let the season's wrath keep them from exercising outdoors, but winter sports can offer great full-body workouts. So put down the cocoa, bundle up and head outside to try a few of these fun activities.
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Photos: Get in a workout this winter
Snowboarding or downhill skiing – Release a few endorphins, improve your flexibility and work on major muscle groups in your legs -- such as hamstrings, calves and quads -- as you burn at least 450 calories an hour snowboarding or skiing. Studies show that outdoor exercise can also improve moods and reduce levels of anxiety.
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