“the concept of #criticalspeed, which has been popping up in #endurance-related research with growing frequency in recent years. Basically, it’s the #threshold that separates sustainable from unsustainable efforts”
“What makes ladder workouts special is how #anaerobic capacity recharges: the emptier the tank is, the faster it recharges in a given amount of time”

Why Ladders Are the Best Interval #Workouts 🏃‍♀️ 🏃‍♂️ 🏃 https://www.outsideonline.com/health/training-performance/ladders-interval-workouts-research/ #intervals #running