After around 25 years of nights and approaching mid 50s they are getting harder and harder to recover from. The lead up is psychologically challenging knowing that sleep deprivation is waiting for the next few days. I only manage to sleep for around 4 hours even after the 2nd night and then rarely manage later than around 8.00am 24 hours after finishing them. If there was a way out of doing them I would jump at it immediately but no chance at the moment.