Online tool measures F1 driver reaction time to green lights. No installation required, works on both mobile and desktop devices. Features global leaderboard and real-time feedback
Arms swing opposite leg motion during bipedal walking. Reduces body's angular momentum, balancing walking. Not essential but improves stability and energy efficiency
Isometric exercise involves static muscle contraction without visible joint movement. Main types are presses, pulls, and holds. Can be unweighted (self-resistance) or weighted (fixed weights)
MAS is the lowest running speed at maximum oxygen uptake (VO2 max). Developed to improve training specificity and monitor loads accurately. MAS is directly related to VO2 max but not running economy
Jen Widerstrom holds multiple certifications including NASM and CrossFit Level 1. Katie Crewe is a certified strength and conditioning specialist. Joe Holder is a Nike master trainer and holistic health expert. Ben Bruno trains celebrities like Kate Upton using weighted sleds. Kira Stokes has 20 years experience with 11 certifications
VO2 max measures maximum oxygen utilization during intense exercise. Test is conducted in lab using treadmill or stationary bicycle. Results expressed in mL/kg/min, indicating oxygen consumption per minute