"In September, the league barred players from deliberately slamming into one another during regular-season practices, and while they still wear helmets, they no longer wear shoulder pads and other protective gear in practices."
"Since 2011, N.F.L. teams have been allowed to hold only 14 contact practices during each season, down from an unlimited number before."
"Buddy Teevens, the coach at Dartmouth, a member of the Ivy League, said the number of concussions in practices and games at his college had fallen by 80 percent since 2011, when he stopped contact practices during the season and began focusing on better tackling techniques using robotic dummies. The reduction in head hits during the week has also made players less vulnerable on game days."
https://www.nytimes.com/2017/11/24/sports/football/canadian-footballs-big-steps-to-reduce-hits-a-contrast-to-the-nfl.html?module=WatchingPortal®ion=c-column-middle-span-region&pgType=Homepage&action=click&mediaId=thumb_square&state=standard&contentPlacement=10&version=internal&contentCollection=www.nytimes.com&contentId=https%3A%2F%2Fwww.nytimes.com%2F2017%2F11%2F24%2Fsports%2Ffootball%2Fcanadian-footballs-big-steps-to-reduce-hits-a-contrast-to-the-nfl.html&eventName=Watching-article-click
"Since 2011, N.F.L. teams have been allowed to hold only 14 contact practices during each season, down from an unlimited number before."
"Buddy Teevens, the coach at Dartmouth, a member of the Ivy League, said the number of concussions in practices and games at his college had fallen by 80 percent since 2011, when he stopped contact practices during the season and began focusing on better tackling techniques using robotic dummies. The reduction in head hits during the week has also made players less vulnerable on game days."
https://www.nytimes.com/2017/11/24/sports/football/canadian-footballs-big-steps-to-reduce-hits-a-contrast-to-the-nfl.html?module=WatchingPortal®ion=c-column-middle-span-region&pgType=Homepage&action=click&mediaId=thumb_square&state=standard&contentPlacement=10&version=internal&contentCollection=www.nytimes.com&contentId=https%3A%2F%2Fwww.nytimes.com%2F2017%2F11%2F24%2Fsports%2Ffootball%2Fcanadian-footballs-big-steps-to-reduce-hits-a-contrast-to-the-nfl.html&eventName=Watching-article-click