If you’ve been wanting to tighten up your core, you may have thought about investing in a Stealth Core Trainer or an ab roller. Both are easy at-home tools you can use every day to work your abdominal ...

While each product featured is independently selected by our editors, we may include paid promotion. If you buy something through our links, we may earn commission. Read more about our Product Review ...

All products featured here are independently selected by our editors and writers. If you buy something through links on our site, Mashable may earn an affiliate commission. The Stealth Core Trainer is ...

I recently discovered a three-move core-building workout from one of my favorite online fitness trainers and decided I'd use the routine every single day for the week. My goal? To build a better habit ...

A strong core isn’t just about cranking out sit-ups. Sure, they’re a classic ab move, but if you really want to strengthen your midsection and keep your waist looking nipped yet strong, you’ll need to ...