I am not a morning person, as my clients know 9 am is the earliest I will train, but I am happy to work well into the evening. We all have different sleeping patterns and getting enough of it is an essential component of a healthy lifestyle. One of my favorite sleeping behaviors is napping; often given a bad rap, nothing beats a nap to get you back on your feet when feeling tired mid day. We often relegate napping to young children and the elderly, but napping can provide many benefits. The average recommended napping duration is about 20 minutes. Here is a great link with lots of useful information on napping.
Happy sleep!