Daily How Much

Sharks get brief, scattered rest—minutes to hours per day—varying by species and method, not deep human-style sleep.

Adult horse sleep totals about 3–5 hours per 24 hours, with 30–60 minutes of REM sleep that only happens when the horse lies down.

Wild foxes usually sleep 8–10 hours in 24 hours, with red foxes averaging about 9–10 hours and shifting rest around dawn, dusk, and night.

Most new mums get around 4 to 6 hours of broken sleep a night in the early weeks, with gradual improvement across the first year.

Most monks sleep about 4–8 hours a night, with many Buddhist monks around 4–6 hours and Western monks closer to 7–8.

Most adults with lupus feel best with 8 to 10 hours of nightly sleep and extra rest during flares, guided by their doctor.

Most adults with cancer do best aiming for 7–9 hours of night sleep plus flexible daytime rest, adjusted with their own medical team.

New mums often get about 4 to 5 hours of broken sleep a day in the first week, rising toward 6 to 7 hours by around three months.

Most fibromyalgia patients do best with 7–9 hours of sleep a night, often near the upper end plus extra rest during symptom flares.

Most adults with insomnia sleep around 5 to 6.5 hours a night, well below the 7 to 9 hours recommended for healthy sleep.