As a SHAPE reader, you’ve likely noticed how some workouts give a specific number of reps to do for each exercise while other routines say to do an exercise for a set amount of time.
There's a reason fitness experts love to include burpees in their programs: They're an extremely effective way to burn calories, build upper-body strength, and increase power.
Can you really get an effective workout in only 15 minutes? You bet your abs you can!
While treadmill workouts can certainly be effective, they also get redundant, thus killing your workout motivation. Plus, you may not always have access to a cardio machine.