Method to my madness - keeping it sane

I could have posted this to animism discussion thread also, but decided to post it here - so here we go!

This time of year, when sun shows above the horizon just a few hours (yes, i live in northern hemisphere) - i get so depressed that i would have serious problems if had not found solution and relief to it - dancing alone in the dark, naked to shamanistic music untill i'm exhausted and sweaty, gasping for air. After this kind of session depression and my demons vanish for weeks and i feel so good and together. Does anyone have similar experience ?