As a young teen, I first tried kickboxing in a group fitness class with my mom. I loved it so much that I eventually got my own punching bag to use at home after school so that I could release my ...

Warm up at an easy pace (an effort of 3 to 4 on a scale of 1 to 10, with 10 being the hardest). Warm up with three easy laps* (an effort of 3 to 4 on a scale of 1 to 10, with 10 being the hardest).

You’ve seen them at the gym – the cardio bunnies who spend hours on the treadmill but never touch a weight, and the muscle-obsessed lifters who break into a cold sweat at the mere mention of running.

The debate surrounding cardio-training versus weight-training is a tale as old as time: Which is more important for overall health? What about weight loss? Which should go first? Will weight training ...