Train when your chronotype peaks, but never let the perfect hour stop you from training

Your body has a natural chronotype: a morning type, an evening type, or something in between, driven by the circadian rhythms of cortisol and testosterone. It determines when in the day you perform best, physically and mentally, and the gap between a clear morning type and a clear evening type runs up to eight hours. Evening types reach their aerobic peak around 20:00, roughly eleven hours after…