I always feel worse, I am not a natural napper. DH can put his head down and get up again 45 mins later feeling great, but I just feel nauseous and only marginally less tired. DD naps all the time and still sleeps fabulously at night, I'm very envious. She once even had a nap under a tree on a hot day while on a school trip, she is the human version of the poem 'Cats sleep anywhere'.
We all had a bad night. We have an old house alarm that came with the house. We haven't actually used it for over a decade and it has decided to go off intermittently usually with months between every occasion. Except for last night when it went off four or five times between midnight and 6.30 am. I can't get anyone to decommission it.