OnFitness Magazine Articles
Smart Fitness. Stronger Living.
Explore evidence-based articles on training, nutrition, recovery, health, and longevity — written for adults who want to build strength, move well, and stay active for life.
Inside Astronaut Training: What Christina Koch Reveals About Human Performance
Astronaut Christina Koch reveals how spacewalking challenges the body and mind — from marathon-level exertion in a pressurized suit to the strength, endurance, recovery, and focus required to perform in microgravity.
Jamie Mitchell
Jamie Mitchell is in a premier league of big-wave chargers who closely monitor global weather and swell forecasts, ready, willing, and more than able to drop everything and go wherever necessary to catch and ride the largest, most powerful, majestic, and dangerous waves in the world.
Inside the Mind and Body of Astronaut Christina Koch: Fitness, Fear, and Spacewalking
As astronaut Christina Koch prepares for the Artemis II mission, she shares a rare look at the physical demands, mental discipline, and resilience required to perform in the extreme conditions of space.
Garrett McNamara's Kick Ass Workout
Garrett McNamara isn't your typical surfer. In 2003 he competed in the Tow Surfing World Cup at Jaws in terrifying 70-foot surf, which even he admits was scary. He won and took home the $70,000 purse and the world title. In that same year, he caught a death-defying 20-foot Hawaiian barrel at Jaws.
Daniel Mosier
Daniel was undefeated at The Arnold Classic in 2018 and is now the 2019 National Arm-Wrestling League Champion at age forty-one
Hunter McIntyre: Tough Mudder Pro & Obstacle Race Champion
Tough Mudder Champion Hunter Mcintyre
Cody Nance: Champion Bull Rider & Rodeo Star
Professional bull rider Cody Nance reflects on his rise from a hardworking Tennessee childhood to the elite world of PBR, sharing the grit, training, injuries, faith, and resilience behind his rodeo career.