The Mayo Clinic has posted a list of the activities that burn the most calories in an hour. What do you think tops the list? Running is the number one calorie burner, which should not come as a surprise to anyone who runs on a regular basis. What are some other great workouts?

• Aerobic Dancing: 416-533 cals
• Backpacking: 448-574 cals
• Biking: 512-574 cals
• Jogging: 512-656 cals
• Racquetball: 448-574 cals
• Rope Jumping: 640-820 cals
• Running: 864-1107cals
• Skiing, Cross-country: 512-656 cals
• Swimming: 384-492 cals
• Tennis: 448-574 cals

Most of these aren't surprising, but I didn't know aerobic dance was such an effective exercise. What about you?

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