Rhythmic variations in energy metabolism.
D000818:Animals; D001481:Basal Metabolism; D001717:Birds; D001831:Body Temperature; D001833:Body Temperature Regulation; D001835:Body Weight; D002940:Circadian Rhythm; D005247:Feeding Behavior; D005260:Female; D006801:Humans; D008297:Male; D008598:Menstruation; D009068:Movement; D010101:Oxygen Consumption; D051381:Rats; D013696:Temperature