
Sit-ups are a great foundational exercise to work your abs, though you don’t need to spend hours on endless repetitions to strengthen your midsection. Instead, use this equipment-free, no-repeat abs workout to build core muscle in just 10 minutes.
The routine, developed by the fitness duo Juice & Toya, features 10 exercises to target your midsection. You’ll do each one for 45 seconds, take a 15-second break, and then start the next move.