Forget sit-ups — this 15-minute workout can sculpt your core with just 6 moves

A photo of a woman's abs.

Sit-ups are probably the first ab exercise I ever learned to do and while they are great for engaging the core muscles, I find they are a touch boring and overused in ab workouts.

While I don't actively avoid the humble sit-up when training my midsection, I do get excited when I find an ab circuit that's free of them, like this 15-minute session from trainer James Stirling.