Same as Grade 1, but symptoms last longer than 15 minutes. If a player suffers a second Grade 2 concussion, the athlete should not return to play for at least two weeks without symptoms. A player should not return to play for an entire season if that player has an abnormal brain scan. If a player suffers a second Grade 3 concussion, the athlete should not return to play for at least one month without symptoms. Football isn't a contact sport, it's a collision sport.
Dancing is a contact sport.