Consistency Is Key to Fitness

Working out at the same time daily may make a difference when it comes to improving your fitness

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Cycles of intense physical activity and rest were associated with better cardiorespiratory fitness and walking efficiency—two important aspects of healthy aging, according to a study. Circadian rhythms, or biological clocks, regulate a person's activities over 24 hours—including sleep-wake cycles and wide-ranging physiological and metabolic functions. "The circadian mechanisms that generate daily rhythms in our system are important for our well-being," senior author Karyn Esser, professor and chair at the University of Florida College of Medicine, US, said. Eight hundred independent older adults, aged on average 76, wore wrist devices that continuously monitored activity for seven days. Their he