Unilateral Training

The chest, back, and arms workout for training partners

This old-school training technique will blow up your chest

Back, Shoulders, and Arms Workout for Training Partners

Watch: Brett Eldredge talks staying fit on the road, his love of hot sauce, and high-intensity training

Watch: Boxing superstar Saul 'Canelo' Alvarez talks training, motivation against Gennady Golovkin

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

Legs and Abs Workout for Training Partners

The legs and abs workout for training partners

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

The 3-Day Workout Program for Training Partners

The back, shoulders, and arms workout for training partners

Chest, Back, and Arms Workout for Training Partners

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