My friends are always shocked that my kids are still asleep at 9 or 10 in the morning during the summer. It’s partially because I let them stay up too late, but I also think it’s partially internal wiring. Michael and I are late-night people, and we always have a hard time getting up in the morning.
We know several couples who have adopted kids, and it’s interesting to study whether sleep patterns are inherited or situational. One of the couples had a daughter on their own before they adopted. The first daughter was always an early riser and the adopted daughter seems to follow suit. Could her birth-mother have been an early riser or is she just hearing her sister wake up and adjusting to the family’s pattern? The other couple has two adopted children and what’s interesting is when the second child came two years later, he completely mimicked the older child’s patterns.
Are sleep patterns genetic? Do they rise when they hear you rise so they seem genetic? Can you reprogram them to sleep later or get up earlier by just adjusting their bedtime at night?