Welcome to OnFitness Magazine
Evidence-based fitness to build strength, recover smarter, and stay strong for life.
Surfing Fitness After 70: Training, Recovery & Longevity Lessons from Joseph Grassadonia
At 73, Joseph Grassadonia is still surfing Hawaii’s North Shore—and thriving. Discover how he stays strong, pain-free, and energized through a mix of intermittent fasting, strength training, and natural recovery.