Nick Blackmer is a librarian, fact-checker, and researcher with more than 20 years of experience in consumer-facing health and wellness content. Lie on the mat with your arms extended straight up.

With so much focus on the upper body and core, it's easy to forget to tone your back muscles. After all, you want to look ...

For mobility workouts from Danielle Gray — plus fitness challenges, walking podcasts, meal plans and inspiration — download the Start TODAY app! If you suffer from pesky aches and pains, there's a ...