That’s a great question @xphoenixsxreasonx, and I can see you’ve got some wonderful answers! 
For a few more ideas, I know there’s another forum discussion with some additional tips here: Feeling Tired After Spellcasting? Here’s Why- And How to Help!
My personal favorite treatment for exhaustion (both post-spellwork and mundane woes) is a hot and cleansing bath or shower 
The hot water and steam seems to cut right through mind fog! If that doesn’t work, then I try to be brave and turn the water cold 
. Sometimes a refreshing and chilly shower can work wonders for the mind and body (not to mention for silky hair and skin too!) 
I hope you are feeling better if you were burned out- happy casting and blessed refreshing post-spellwork!
Love and Light