How to workout anywhere without any gear?

Are you one of those people who keep complaining that you don't have time to workout and no money to pay for a gym membership. In fact, there really are no excuses for not working out. In most cases, all you need to work out is a bath towel (or yoga mat) and maybe background music. Here are two great videos that how to do you workout almost anywhere (in a tiny apartment, in your hotel room, or even in your office cubicle) within minutes.

And here is the second one.