Psychology Today: When to Call It Quits

http://www.psychologytoday.com/blog/brain-trauma/201410/when-quit-contact-sports-due-concussion

When you play a contact sport, you may be trading cognitive function for the thrill of game, playing Russian Roulette with your future. From a medical perspective, playing contact sports is not a healthy or wise risk. Although there are many benefits from the game and being on a team, here are risks and considerations to answering "when is it time to quit?"

By Harry Kerasidis, MD