When most people think of a strong core or achieving abs, the first exercise that comes to mind is often sit-ups. While sit-ups have long been a go-to for strengthening the core, they're not always ...

Building a strong core means far more than just flattening your stomach or sculpting visible abs. Your deep core refers to a group of muscles that stabilize your spine, pelvis, and internal organs, ...

When the fitness company Peloton added weighted-vest classes to its streaming exercise offerings in May 2025, its members rejoiced, says instructor Rebecca Kennedy. “They were like, ‘Finally! You ...