When you're swamped at work, putting in a full hour at the gym isn't always an option, but even the tightest schedules can squeeze in a 30-minute session. This fast-paced elliptical workout alternates between periods of pushing your body to the max with a short recovery, a great technique to make the most out of a quick, midday workout.
*SPM = Strides Per Minute
Incline = 20 percent
Click here for an image-free printable version of this elliptical interval workout.