As winter ends, summer sneaks up very soon afterward. Since summer clothing often means shorts and bikinis, if you’d like to get your legs ready for summertime, that’s an area you can begin to work on now. This leg workout is quick, but every minute of those 15 minutes will require your full energy. Think about how you normally spend a fifteen minute break in your day. Checking email? Playing Candy Crush? Make those minutes count. Beat the curve, workout ahead of the season, and be ready with your shorts on that first warm day.

Equipment Needed: set of medium weight (8-12 lbs), interval timer (Gymboss is a free app download)