Not sure if this matches up, but yes, in the past couple of years I do feel exhausted after sessions. I usually session with my one-and-only Mistress on weekends in the early AM. Thanks to anticipation, and my horny nature, I hardly sleep the night before, waking up at 4 am or so for let's say an 8 am session.

Yes, by the time I meet Mistress at 8 am I'm high on anticipation and adrenaline. By the time I get home I'm tired and usually take a nap, often daydreaming about what happened. Of course when I was in my 40s that didn't happen. Thirty years later it's a different story. LOL!