rest and rest and rest and oh yeah, did I mention rest? That can sometimes help you not turn that corner, or recover a bit more quickly.
For the most part, its usually a "hang on" type deal. I have not heard of any tried and true method that is a "one size fits all" fix.
Many of us have little tricks that we use upon ourselves that can be helpful but just like the DMDs we wont know which ones work till we try them.
Hang in there. we are here cheerleading for you!