Year-Long Study Of Elite Athletes Reveals Daily Energy Limit That Fitness Rarely Overcomes
Endurance in the long haul: over weeks to months, daily energy burn trends toward a common ceiling— even…
Are You ‘Overspending’ Your Heartbeats? New Metric Could Transform Physical Fitness
An athlete’s heart is monitored while he runs on a treadmill. (Photo by Gorodenkoff on Shutterstock) Researchers believe…