There do seem to be improvements in the head injury protocols for high school football players, such as not allowing them to play or practice for a certain time period after a hit. I don't know how widespread they are though. I think real changes will have to come from parents and coaches believing that they're necessary.
I read something yesterday online, I'll try to find it later. It was written by an NFL player about how he felt after gaining a better understanding of the risks of TBI and football. He said that he doesn't regret his involvement in the sport but if he had children he doesn't know if he'd allow them to play it.
As for things like boxing and MMA, I really don't get the appeal. There's a certain silliness in all sports, when you really think about them -- trying to throw a ball through a hoop or to kick it into a net or hit it with a stick and then run around in a circle. Or to run or ride a bike really fast from point a to point b just to say you were fast. But when the entire objective is to hit someone until they fall down, to me that's not a sport.
- Gray 2010 carbon WSD road bike, Rivet Independence saddle
- Red hardtail 26" aluminum mountain bike, Bontrager Evoke WSD saddle
- Royal blue 2018 aluminum gravel bike, Rivet Pearl saddle
Gone but not forgotten:
- Silver 2003 aluminum road bike
- Two awesome worn out Juliana saddles