You don't need hours at the gym with weights or endless sit-ups to strengthen your midsection. Instead, you can build core strength in as little as 10 minutes without even getting down on the floor.

If you don’t have much time to devote to your workout, no worries. You can get a lot done, whether you want to sweat, strengthen, or stretch. That’s the idea behind the 10-minute workouts from Juice ...