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.
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.