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.

Most sick adults do best with roughly 8–10 hours of sleep a day, with children needing even more while they recover.

Most women in their 30s do best with 7–9 hours of nightly sleep, with 7–8 hours working well for many.

Most adult women need 7 to 9 hours of sleep each night, with small shifts by age, health, hormones, and daily demands.