Shadow-Boxing!

Alright folks, this is actually a great way to do cardio that many people don't think about!



All you need is a bit of space! Jumping is optional so it's also a good low-impact option.



Here are a few videos so you get the idea;



http://ift.tt/1nXb3nM (When I first tried it, I just copied what this guy was doing)



http://ift.tt/1iLLYig



http://ift.tt/1nXb3nQ



Since you're doing this for cardio purposes, technique is not really important as long as you keep moving.



You can also do intervals with this. Do a couple minutes of shadow boxing and add a 30 sec - 1 min interval of a bodyweight exercise (Jumping jacks, burpees, etc) every now and then to keep the intensity high(er).



So go ahead and try it!