Most 7-month-olds need about 14 hours in 24 hours—around 11–12 hours at night plus 2–3 hours of daytime naps.

A typical 6-month-old baby needs about 12–16 hours of total sleep in 24 hours, including night sleep and 2–3 daytime naps.

A 5-month-old usually needs about 12 to 16 hours of total sleep in 24 hours, split between night sleep and several daytime naps.

One three month old baby usually needs around 14 to 17 hours of sleep in 24 hours, split between night sleep and several daytime naps.

A typical 12-week-old baby needs around 14–17 hours of total sleep in 24 hours, usually split between longer night sleep and 3–5 daytime naps.

Most student-athletes average 6 to 7 hours of sleep on school nights, below the 8 to 10 hours recommended for teens and young adults.

Most college students average around 6–7 hours of sleep a night, which falls short of the 7–9 hours recommended for young adults.

Most 4-month-old babies need around 12–16 hours of total sleep in 24 hours, split between night stretches and daytime naps.

A typical 10-week-old baby sleeps around 14–17 hours in 24 hours, split between daytime naps and longer stretches at night.