Choosing your pace based on the physiological transition from easy to hard is more effective than calculations based on maximum heart rate, research shows.
Photograph by Marcus Smith/August; Illustration by Drue Wagner
Published January 5, 2026…
Choosing your pace based on the physiological transition from easy to hard is more effective than calculations based on maximum heart rate, research shows.
Photograph by Marcus Smith/August; Illustration by Drue Wagner
Published January 5, 2026…