Am I too old for this?

With each passing week, I become a bit more tired it seems. Hell, I am only 42, so I should be good with partying all night on Saturdays as long as there is sufficient recovery time on Sunday, right? I mean, seriously. 42 is NOT that frigging old! And it isn't like I am out running a damn marathon on Saturday Nights (Capitalized due to my love for them). I am just sitting at a club, being a dj, and sometimes dancing.

Now, me dancing is a terrifying sight to most. Hell, terrifying to all actually. But, when imbibing, a guy has to get his boogie on, right?

Anyway, at what point does one slow it down?