Give your girlfriend a gift, or grab one for yourself.
The short and intense workout you've been looking for.
- 7 celebrity weight-loss secrets we totally approve of — Women's Health
- 6 moves for a perkier chest — Shape
- Should caffeine be your pre-workout snack of choice? — Self
- How eating avocado can help you slim down — Health
- The top 10 running myths that are slowing you down — HuffPost Healthy Living
- Grab a box and do this 20-minute workout — Fitness
- Liven up laps with this superhero swimwear — POPSUGAR Tech
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