Another Bowflex goodie, this HIIT workout session combines moderate-intensity exercises with high-intensity exercises for a proper cardio burn. Ending up a sweaty mess = guaranteed.

With any cardio exercise, 150 minutes a week is a great baseline, so you can break that up however you want. Dancing for about 30 minutes a day, five days a week, is optimal. It's also a good idea to ...

10. High-Intensity Interval Training (HIIT) HIIT has been said to be one of the most time-efficient workouts around. Check out the best HIIT workouts for beginners.

I still sign up for the occasional cardio class at the gym where I work, both to move my body and to indulge in the nostalgia, but I don't go as often as I could—because if I'm in the mood to dance ...

Instead, it should be part of a well-rounded exercise program. It is best to perform HIIT workouts on nonconsecutive days and to do less-intense types of physical activity on other days.

While you cannot spot-reduce fat, some types of exercises, such as HIIT and strength training, could help you lose more belly fat than others.

However you do it, what makes HIIT work is the intensity. You’re going hard – typically as hard as you can – for a short ...