In this game health is everything and even pros should always keep on top of their health. They should learn of and respect the limits of their bodies as pushing beyond the limits will risk shortening their lives.
Nice sleeves and yeah they do sound like a sling shot but for your knees. Here's hope you'll nail that 730lbs with them!
EDIT: Looks like the Rigor Mortis ones are all sold out...hope there is a restock.