From a mom with kids who gave up napping early, you may find that your kid just wants sleep at night now. My kiddos (ages 2 and 4) get 12 hours of sleep, but they do it from 7:30PM to 7:30AM. If one of them accidentally takes a nap in the car (a rare occurrence), then that one has a really hard time getting to sleep at night. Neither one of them typically displays a grouchy or sleepy behavior in the afternoon or before bedtime (I have seen this behavior in other children and don't know why my kids don't display it!). They only sometimes seem "worn out" after a lot of outdoor activity and hardly ever act "sleepy," although my 2-year-old sometimes does seem sleepy just at bedtime. Sometimes I wish I could get a long period of rest for myself at the middle of the day that other moms get, but actually my girls entertain each other well and have restful periods where they look at books or play quietly and allow me to get some computer time or other down time. Every family and every kid is different! When I finally gave up on forcing the nap, my life became so much less of a struggle. I felt pressure from others to make napping work, but it just didn't for us. My kids are generally cheerful, bright, active, social, and healthy. My stress level is much better now that I listen to their cues rather than fuzzy this-should-work-for-everyone recommendations from pediatricians!