The 7 best fat-blasters

1. Inline skating Burns 425 calories in 30 minutes
Boost the burn: Alternate one minute of hard skating with one minute of medium-paced strokes.


2. Running Burns 374 calories in 30 minutes
Boost the burn: Alternate fast and slow intervals, or take to the hills.


3. Jumping rope Burns 340 calories in 30 minutes
Boost the burn: Frequently switch up your speed (slow, fast) and style (jumping with one foot, then two feet), or jump rope while you jog.


4. Hula hooping Burns 300 calories in 30 minutes
Boost the burn: Get how-tos for advanced moves and a fun workout at Health.com/hula-hoop.


5. Tennis Burns 272 calories in 30 minutes
Boost the burn: Try to hit the ball consistently for 50 or 100 strokes. "Having a goal will make you work harder to reach it," Braganza says.

6. Dancing Burns 221 calories in 30 minutes
Boost the burn: Use your arms! Raise them in the air and move them to the beat.

7. Walking vigorously Burns 170 calories in 30 minutes
Boost the burn: Alternate two minutes of brisk strides with one minute of as-fast-as-you-can-go walking (or jogging).

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