The starburst side plank variation strengthens the shoulders, abs and obliques. Here's why we love it at Tom's Guide.

No time to get to the gym tonight for an upper body session? No problem! That’s exactly what this express-style workout is for. In just 15 minutes you'll exert your biceps, triceps, shoulders and abs, ...

Shoulder circles with a stability ball work on the deltoids and upper back muscles. Start by sitting on a stability ball ...

Build a lean, strong core with five bodyweight routines for power, balance, and endurance. No equipment. In 10 to 15 minutes.

This balanced approach—with a Beginner and Advanced track—can help you build strength and muscle with a smart strategy.

A strong core helps with posture, balance and stability, and can help prevent back injury and reduce existing back pain. Along with the lower back and glutes, the abdominal muscles are the primary ...

After 31 days and more than 1,500 reps, one Women’s Health writer found out what daily shoulder taps really do for your abs, ...

A strong core is key to performing everyday activities safely and effectively — and it's more than just your abdominals.

Core exercises are easy to fall prey to boredom. After all, how long can you keep doing the same crunches and planks before you hit a plateau? These five core exercises to keep your mind engaged and h ...

Welcome to Start TODAY. Sign up for our Start TODAY newsletter to receive daily inspiration sent to your inbox — and join us on Instagram! The core plays a key role in our overall physical health and ...

Strengthen your core and slim your midsection with these five simple chair exercises that target your abs safely after 60.

YOUR CORE TRAINING routine needs to evolve beyond bodyweight. Whether your goal is to train for aesthetics or performance (hopefully, you'll be concerned about both), you'll only get so far by running ...