jumping jacks

An 8-minute, no-equipment workout that actually works - sound like a gimmick? Researchers reviewed the literature on bodyweight exercise and came up with this new circuit.
You've got 12 minutes today to set yourself up for Independence Day festivities with a fat-burning workout? Sure you do.
As a coach I see a lot of crazy things going on in the gym. These ten, though, have got to be the ten worst movements. I'll explain why they are bad ideas and the alternatives you could do instead.