November 13, 2026 · 10 MIN
Immune Function During High-Volume Training Blocks: How to Stay Healthy When Load Peaks
Heavy training blocks suppress immune function for 3-72 hours post-session, creating an "open window" where infection risk increases 2-6x. Upper respiratory infections cause more missed training days than musculoskeletal injuries in elite endurance athletes — and they are largely preventable with specific nutritional, behavioral, and load management strategies.
