Figuring out heat.
I warm up and warm down with a rice sock and find it extremely beneficial for getting good expansion and letting myself recover. I’ve found that after an extended session a disposable hand warmer packet fits nicely into my underwear (have to wear pouch-front undies to keep everything in place) and works WONDERS for recovery. Any discoloration or swelling disappears readily and I NEVER experience turtling anymore. Just a phenomenal flaccid. Worth the 50 cents IMO.