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 ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Photo credit: Stealth I'll be honest: As much as I love a tough HIIT or sweaty Pilates session, I miss the days when physical ...