In contrast, breastfed babies were always positioned flat on the mattress, below pillow height. (breastfeedingtoday-llli.org)
As a rule, it's best to have between four to six inches of pillow height to give your spine the support it needs. (sleepmetro.com)
Proper pillow height not only puts your spine in the ideal position, but it also helps keep your hips, shoulders, and neck in a neutral alignment. (sleepmetro.com)