Behind the Scenes: Michael B. Jordan December 2015

Fit In 5 To 20 Minutes - Muffin Top Burn Off - 20 Minute Workout

Fit In 5 To 20 Minutes - Muffin Top Burn Off - 15 Minute Workout

Flat Belly Workout! Walk Off Belly Fat

15-Minute Dumbbell Workout for All Levels

This Tattoo Parlor Specializes in Beautiful Mastectomy Tattoos for Women Who’ve Had Breast Cancer

This Plus-Size Burlesque Performer Is Challenging Harmful Stereotypes One Fabulous Dance at a Time

Challenge Accepted: Spartan Ultra Iceland, Part 2

Challenge Accepted: Spartan Ultra Iceland, Part 1

All the gear you need to crush a Spartan Ultra in Iceland

Challenge Accepted: Spartan Ultra Iceland, Part 3

Watch: Exclusive preview of 'The Redeemed and the Dominant: Fittest on Earth'

Simple, healthy Valentine's Day desserts couples can make together

Watch: Get a behind-the-scenes look at Tom Cullen's 'Knightfall' sword training

Fitness star Anna Victoria's top tips for a successful body transformation

The best yoga moves to improve shoulder flexibility

Watch: Michael B. Jordan looks jacked during boxing training for ‘Creed 2’

Exclusive video: Miles Teller and Josh Brolin talk intense firefighter bootcamp for ‘Only the Brave’

How to commit to athletic excellence, according to Nike trainer Joe Holder

Watch: 'Men's Fitness' editors team up with Katrín Davíðsdóttir and Brent Fikowski to test the Reebok CrossFit Nano 8

Watch: Red Bull Crashed Ice athletes train with CrossFit star Camille Leblanc-Bazinet

Paige Hathaway shares her top secrets for social media success

Gut-Check Workouts: 8 quick routines to fight weight gain

The upper-body push/lower-body pull workout

The upper-body inner-beast workout for big, strong, and shredded shoulders, pecs, and triceps

Theater of War: How actor Michael Kelly gained military muscle for 'The Long Road Home'