 You have to be very careful in getting good sleep. And you can only function just a few hours out of the day. We as neurologists will tell patients to kind of use the best times with mom or dad or grandpa or grandma at the times when they're really, really good, maybe between the hours of 7 a.m. and 11 a.m. because after that it's really not healthy. They can't function well. So it's really important for them to be on a good routine.