I remember demonstrating a variation of stand-up sit-ups during F45 classes. The saving grace was using a bosu ball to rest my mid to upper back on, meaning there was less distance to travel each rep.

We’ve said it before and we’ll say it again — when it comes to building a rock-solid core, endless sit-ups and planks alone won’t do it. Not only does switching things up help you beat ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Getty Images While classic core exercises like sit-ups, planks and crunches are ...

No sit-ups — just this four-move standing ab workout to build a stronger core. ... all performed standing—so there’s not a single sit-up in sight—and will only take you 15 minutes.

The post, which had accumulated 6.3 million views, 6,900 likes and 1,000 reshares as of this writing, included a video demonstrating the way to sit and stand up, a clip from a 2023 segment on the ...