In Depth Protocol

The Trigger: Rapid eccentric contractions (like landing a jump) recruit high-threshold motor units that are typically dormant during standard lifting. The Structural Change: This overload forces muscle fascicles to lengthen by adding sarcomeres in series (Sarcomerogenesis). The Result: Longer fascicles contract at higher velocities for the same energy cost. This provides a "structural buffer" against injury and creates a permanent "gear shift" in your muscle's power potential that resists age-related decline.