If you’ve only got 10 minutes, keeping your heart rate up throughout is important, says Kristen Stehly, a personal trainer and fitness blogger at StuftMama.com. But that doesn’t mean you need to do the same thing at the same intensity the whole time. “Intervals work better at blasting calories than steady-state exercise,” she says. And one of her favorite quickie workouts requires nothing but a set of stairs: Run them at full speed, then do five burpees at the top, then run back down and repeat as many times as you can.
Fitness tip: if you don’t have stairs do High Knees for 10s and then do 5 burpees