Start with the classics. Of course, you can always do your personal favorite variations, but there's no better upper body move that requires nothing more than a little will power.

While you're down there, throw in some running man moves in. It will get your legs and midsection firing. 

No one said every move has to be high-intensity. Lay flat on your stomach, then work your back by lifting your legs, arms and head simultaneously. Hold for a short

count, relax, and repeat.

No skipping leg day. Flat on your back, bring straight legs up to a 90-degree angle, then come back down. You can mix it up by alternating legs each rep.

You don't really need the classic rack. In a hotel room, try this with that desk chair no one ever uses -- you can put your feet on the bed to

increase the difficulty. Get creative!

No one's going to add a lot of mass in Holiday Inn room 238, but just going through the motions is great maintenance for even power lifters. If you want to up the

ante, use your luggage for additional weight.

Sure, you can do the standard crunch routine. But if you want to mix it up, try this move that hits every muscle -- more speed = more burn.

The best cardio workout that requires just a few feet of space. Never tried it before? There's hundreds of Youtube routines that'll have your BPM up in no time.