and won't go down for naps – this is the 4-month sleep regression. At 4 months old, your baby is ready to take the first of many massive developmental leaps. However, changes in their awareness ...

This is a sample sleep schedule I’ve developed, every baby is different so you may want to tweak it slightly but this gives you a clear example of when and how long your 4-month-old baby should ...

The study aimed to analyse usual sleep position in 2-4-month-old infants, age known for highest incidence of SIDS, and to assess their ability to spontaneously modify sleep position with special ...

Your circadian rhythm is one of four biological ... months to 9 months old. Once their circadian rhythm and body functions mature, toddlers and children have a fairly regulated sleep schedule.