Inside Shoulder
Nathan Sharpe (72)
I agree with the coach and I like to watch, it's only a good thing in specific circumstances. No point parking a 21yo on the pine when he could be playing 2nds.
However, the fact is playing rugby, cooling down, then coming on for a cheeky 20 minutes increases your injury risk by a huge margin (or more than 20 if there's an injury!). Even if you warm up properly for your 2nd go, the risk is still far higher and the science on this is pretty conclusive.
Thats the trouble with progress: there wasn't any science in the 70s and 80s so no one got injured