Anyone else experience this?

Do you always follow the same routine? So, what would happen if you finished your session without going for a traditional orgasm or without sleeping afterwards?

Also, by a few hours of sleep, do you mean a three hour-long nap? If so, do you do this on a regular basis? The lethargy and depression could just be products of factors like sleeping habits/eating habits/etc. A vigorous aneros session might just exacerbate underlying problems of energy deficiency.

Your diet may be to blame, there are too many variables to mention. If you eat or drink any foods or liquids that are stimulants you may be crashing. Sugars do it too. Are you a heavy meat eater. Do you eat too much salt.... as I said there could be mulitiple factors. Study your intake and adjust to healthy alternatives or cut out items that are overly processed, contain many chemical additives or may have too much fat or oils. Then see what happens.