You've been so busy, you can barely find the time to eat. We get it. But if you have even 15 or 20 minutes to spare, that's plenty of time to squeeze in a solid workout. Don't believe us? Take it from Jason Walsh, founder of Rise Nation and trainer who has worked with Jessica Biel, Mandy Moore, and Emma Stone.
We asked Jason what the best thing is to do when you're short on time — cardio or strength training? "I think you can do a combination of both," he told POPSUGAR. "It doesn't have to be separate. Sometimes I'm very limited in time, so I put together a circuit. You start with something that's more weight-bearing, and then you pick three, four, or five exercises and run through those."
Jason said he'll often choose a couple lower-body exercises, a pushing exercise, and a pulling exercise. Here are a few examples he gave us: lunges, Swiss ball leg curls, hip thrusts, push-ups, and rows on the TRX. You can do 10-12 reps of each exercise, and "then take a minute rest in between sets," Jason recommended. It's probably a good idea to do three or four sets in total, depending on what kind of time you have on you hands. "And if you're doing lunges, do it with weight," he added. "I guarantee you will get stronger, and your heart rate's going to go up." We believe you, Jason.
This kind of circuit gets you sweating and "probably burning fat," and Jason says you'll also "work on the conditioning and the cardiovascular system." In fact, he says this formula is "the idea behind doing a 30-minute class at Rise Nation, because time is the biggest commodity right now."