Hold a weight plate or dumbbell on your chest or above your head to add resistance as you perform the sit-up. This increases the intensity and strengthens the core muscles more effectively.

During sit-ups, you can also increase resistance by holding a weight plate or medicine ball. This method challenges your muscles to adapt and grow stronger over time. High-rep training builds the ...

If you’re clicking on this dumbbell ab workout right now thinking — ”No, not sit-ups,” then we’ve got good news for you — there aren’t any. As a personal trainer, I believe sit-ups ...