It's well established that a strong core can help with posture and back issues, and properly executed sit ups can contribute to a stronger, more stable core. "Regularly doing sit-ups or crunches can ...

As a personal trainer, I believe sit-ups have a time and a place, but they’re not the holy grail of core exercises. We’ve wised up to the many more bang-for-your-buck moves that can transform ...

More from Tom's Guide Forget sit-ups — build a stronger core and boost your balance with this 25-minute standing abs workout Build a stronger core with this 10-minute standing abs workout ...