If you have toys with cords or elastic, cut them off. Never put a loop of ribbon or cord around your child's neck to hold a pacifier or for any other reason. An active toddler can use them to climb out of the crib. This pattern is disruptive to our morning routine. I don't know if I should be worried or just annoyed at this behavior.
Puberty resets adolescents' biological clocks to favor later bedtimes and wake-up times.
Also, rapid growth and hormonal activity means that teens need about an hour more sleep than preteens do. Both boys and girls experience a two-year adolescent growth spurt that adds about eight inches to their height and about 15 percent to their weight. Most teens need between nine and 10 hours of sleep at night. Studies show that more than half don't get it. Instead they tend to get one to two hours less than they did as preteens because of academic, social and work commitments.