Personally I love naps. I can mostly sleep anywhere at any time if the mood strikes. I have had a few LD's in afternoon naps along with false awakenings. I have not been lucid in a while so I can't really tell you if I had any technique for my nap times lol. One time I do remember that I drank a Pepsi right before I went to sleep and had a pretty cool LD. I think that my mind tends to be more active in the day time because there seem to be more outside interruptions... noises and light and stuff.

I love to sleep so my naps tend to be between and hour and three hours. I too wake up sometimes not feeling any better than when I went to sleep. I find with me that a 15-30 min nap can be refreshing but if I go past 30 mins then I think you should try to get 3 hours for the best results. I just find that sometimes I feel worse if I don't get a full 3 hours... anyway that’s my two cents

Sweet Afternoon Dreams