For temperature studies, subjects must remain awake but calm and semi-reclined in near darkness while their rectal temperatures are taken continuously. Though variation is great among normal chronotypes, the average human adult's temperature reaches its minimum at about 05:00 (5 a.m.), about two hours before habitual wake time. Baehr et al. found that, in young adults, the daily body temperature minimum occurred at about 04:00 (4 a.m.) for morning types but at about 06:00 (6 a.m.) for evening types. This minimum occurred at approximately the middle of the eight hour sleep period for morning types, but closer to waking in evening types.
For temperature studies , subjects must remain awake but calm and semi - reclined in near darkness while their rectal temperatures are taken continuously . Though variation is great among normal chronotypes , the average human adult 's temperature reaches its minimum at about 05:00 ( 5 a.m. ) , about two hours before habitual wake time . Baehr et al . found that , in young adults , the daily body temperature minimum occurred at about 04:00 ( 4 a.m. ) for morning types but at about 06:00 ( 6 a.m. ) for evening types . This minimum occurred at approximately the middle of the eight hour sleep period for morning types , but closer to waking in evening types .
At what time does the average adult human reach his lowest temperature?
At what time does the average adult human reach his lowest temperature ?
05:00
05:00