Do you ever have those days where it seems like there is no time to squeeze in a workout? They seem to be getting more frequent for me, so when it happens I turn to my collection of Quick and Dirty Workouts.
No idea why I call it that, but it seems to fit.
If you have 4 minutes you can go through the whole list. If you have extra time, go for a few more rounds.
No weights needed and you can do it almost anywhere. This workout will get your heart rate up, metabolism going, calories burning and will help energize you for the day.