Do ants sleep?

Yes, ants do sleep, but their sleep patterns are very different from human sleep and vary by caste within the colony, with queens sleeping much more than workers and workers taking very short power naps. Research on fire ants and other species shows that worker ants do not sleep for long continuous periods like humans, but instead take many short naps lasting about one minute each, totaling around 4 to 5 hours of sleep per day, scattered throughout the day and night, often while holding onto the nest walls with their mandibles. Queens, which are responsible for laying thousands of eggs and are critical to colony survival, sleep much more, up to 9 hours per day in longer bouts of about 6 minutes each, and their sleep is deeper. During sleep, ants become immobile, their antennae stop moving, and they are less responsive to disturbances, similar to sleep in other animals. Some studies suggest that worker ants have synchronized rest periods where many workers rest at once to conserve energy. Ants also have circadian rhythms and are more active during certain times, with odorous house ants often foraging more at night. Pupae and larvae also have rest periods. The purpose of ant sleep is to conserve energy and maintain colony efficiency, as sleep-deprived ants are less effective at foraging. So while ants do not sleep in beds or close their eyes because they have no eyelids, they do have regular periods of rest that function as sleep and are essential for colony health and productivity.