As a former U.S. Marine, Erin Oprea is dedicated to fitness. Now a Nashville-based personal trainer with clients like Carrie Underwood, she uses her expertise to help those with busy lives stay fit.

Many people don’t use correct form when doing core workouts, which puts stress on the neck and back. Neck pain is an especially common complaint when people do abdominal crunches. Although crunches ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Getty images The horizontal ab squat is a core exercise that strengthens your lower abs ...

If you complete 100 abdominal crunches a day, you might build a little muscle, but more likely, you’ll be left with sore muscles and not much else. The crunch and its relative, the sit-up, can each ...

Abdominal crunches are a great way to build a strong core. Done correctly, crunches strengthen, flatten and tone the abs — the foundation of a strong core. Beyond the elusive "six pack," doing ...

Get ready to sculpt your midsection, strengthen your core, and lean out your abs with just five bodyweight moves from celebrity trainer Astrid Swan of Barry's Bootcamp West Hollywood. "These five ab ...

Read all about the latest gym openings, healthy events, and fitness trends in our twice weekly Wellness newsletter. We’ve got some good news for you: You can strengthen and tone your abs without ...

I'm a personal trainer who's certified in Pilates, but I first discovered the popular workout while searching for relief for my low-back issues. Pilates focuses the deep abdominal muscles, including ...

Welcome to Start TODAY. Sign up for our free Start TODAY newsletter to receive daily inspiration sent to your inbox — and join us on Instagram! Many people don’t use correct form when doing core ...