Huffy is a big fan. I have taken it and healed pretty fast after some injuries, so it might be worth a punt.
You need to get 20 rats, paint half of them red and half blue. Break all the rats legs and give the blue ones glucosamine. Give the red ones a placebo. Keep feeding them all or else they will die and all we will have learned is that rats die if you dont feed them. See which ones start walking first. Post your findings here - and good luck!
