Every few months I'll go through a period for a few days where I am absolutely worthless. It usually lasts about a week and I don't do the normal things I like to do such as mountain biking and weightlifting. I'll also start sleeping in and sometimes sleep like 14 hours in a 24 hour period. I'll usually even have a Sunday headache if you know what I mean as well.

Then, overnight I'll just snap out of it.

I'm middle aged with a great family and job. I'm just on the end of this bender and feel my motivation coming back. It's baffling but I don't get too bent out of shape about it. I guess it's just a middle age thing?