title: Circadian Rhythms.
abstract: In brief Active people watch their body clocks for health and performance advantages. Recent research on circadian rhythms suggests that exercising in the morning is safe, exercise at any time of day boosts mood, athletic performance peaks late in the day, athletes should train at the same time they will race, and jet lag may influence team sports.
authors.forename: E R
authors.initials: ER
authors.lastname: Eichner