I did this at Microsoft for years (go underneath the desk in my cubical and take a 20-30 minute nap). It helps if you tell your cow-orkers "I take naps occasion

I did this at Microsoft for years (go underneath the desk in my cubical and take a 20-30 minute nap). It helps if you tell your cow-orkers "I take naps occasionally, if you see me under my desk I'm not dead, so don't panic". No bad political repercussions. There was a nap room at Apple. I never used it. The room did not go well, and they closed it after some . . . incidents.