These are sleep and circadian rhythms that occur more than once in a 24-hour period. Examples of ultradian rhythms include the sleep cycle, which includes both REM and non-REM sleep, and the feeding cycle.
These are sleep and circadian rhythms that occur more than once in a 24-hour period. Examples of ultradian rhythms include the sleep cycle, which includes both REM and non-REM sleep, and the feeding cycle.