Ok can someone explain this to me?
I mean I get the aim of it, but does it work? What's it all about? Why should I do it over regular cardio/weights training that I'm already doing, and why are people so obsessed with it?
I mean I get the aim of it, but does it work? What's it all about? Why should I do it over regular cardio/weights training that I'm already doing, and why are people so obsessed with it?