Scotty Davis

 
Scotty Davis
 
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Burn As Many Calories In 20 Minutes As You Would In 30

Only have 20 minutes to burn 270 calories? No problem. By increasing your incline, picking up your speed, or sprinting for short intervals you can cut ten minutes out of your 30-minute workout. If you can average a 10- minute mile, you'll be succesful.

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