15 minutes of strain The lack-of-time excuse is left in a trail of sweat.(Lifestyle)

Byline: AMY BERTRAND - PD LIFESTYLE EDITOR

If you've ever found yourself putting off working out because you don't have time, Elizabeth Wehrle has got a workout for you. Wehrle, a St. Louis personal trainer, says, "Anything is better than nothing. And even if you have only 15 minutes, this workout will definitely get you sweating. It also has a strength component, working the upper and lower body and the core."

Wehrle also likes that the kind of strength training used here is functional. "For example, every time you sit in a chair you are doing the movements of a squat."

Even better, no equipment and very little space are needed. Wehrle cautions, …