One of the questions that are often asked is which sport is tougher to play, hockey or football. Sports science reported that NHL hits are 17% harder than NFL hits, even though NHL players are 20% smaller. Both sports have players that play through some pretty tough injuries. In 2011 Patriots center Logan Mankins played the whole NFL season with a torn ACL, which is one of the most painful injuries. In the 2011 NHL playoffs, Nathan Horton of the Boston Bruins played the whole playoffs with a seriously separated shoulder until being knocked out of the Stanley Cup Finals with a concussion. Now skill wise, both sports require a lot. Hockey players skate on the ice for 1 minute shifts skating at up to 25 miles per hour. Football players have to stay on the field but get time in between plays to rest. Football has 6 more positions then hockey players on offense. Each position has a certain job they have to do. Wide receivers have to run routes be able to catch the ball and run. For hockey players every player on the ice has to be able to pass the puck, be able to shoot and be able to skate and be smart. There are more positions in football but require greater detail than hockey. But each hockey player has to be able to do the same thing as every other player on the ice.