When we think of core exercises, standard moves like situps and crunches are often a go-to. But working the side body is an important piece of a well-rounded core routine that is sometimes overlooked.

In TODAY.com's Expert Tip of the Day, a trainer reveals her favorite exercise for a more defined waistline and strong core ...

A simple yet powerful movement trusted by U.S. fitness experts to boost core strength, stability, and athletic performance.

IF YOU ARE focused on building a strong, functional core, you need to know what muscles you're working so hard to sculpt. There are the six-pack muscles (the rectus abdominis) trained with spinal ...

A simple, equipment-free movement that delivers powerful results for core strength, stability, and definition.

"Obliques are a part of your core group of muscles," explains Danyele Wilson, Lead Trainer for Tone & Sculp app. "You actually have two sets of oblique muscles: internal obliques, which run down ...

Ab workouts don't have to be boring, and this 10-minute oblique workout is proof. Here are all the exercises you need, straight from trainer Keoni Hudoba. The obliques don’t get nearly enough credit. ...

Time is a precious commodity, and sometimes, finding time to squeeze in physical activity, like a 30-minute HIIT workout, or a group fitness class can be challenging. However, coach Raneir Pollard has ...

Core exercises for stronger abs include crunches, teasers, planks, and body-weight squats. A strong core helps improve balance and posture.

For on-demand core workouts — plus fitness challenges, meal plans and inspiration — download the Start TODAY app! When we think of core exercises, standard moves like situps and crunches are often a ...