You don't need sit-ups — 3 ab exercises that build a stronger core using a Swiss ball

Woman laying on a Swiss ball during ab workout performing crunches with hands behind head.

You can use a Swiss ball to turbocharge your ab workouts the next time you’re keen to torch your midsection without using weights. 

Also known as stability balls or exercise balls, Swiss balls are large inflatable spheres found anywhere from home and commercial gym settings to your local physio. They’re low impact and can improve mobility, balance and coordination or help build muscular strength and endurance. Just don't underestimate them.