NEW YORK (AP) — Amare Stoudemire is back playing with the New York Knicks after smashing some glass with his hand in frustration last week. He’s not the only pro athlete who has injured himself out of anger in recent years. What causes those outbursts?

Sports psychologists say it can happen in the high-pressure, professional sports world of winning and losing. They point out that pro athletes identify themselves with their performances and that, after all, they’re supposed to be aggressive. Sometimes turning off that aggression can be tough.

But one expert points out that pro athletes aren’t the only people who hurt themselves or others out of anger. Plenty of ordinary folks do it too.

Do you think that anger is something that affects your actions in a way that is damaging to your physical well-being? What does it take for you to be really mad? Do you think it makes sense that athletes get angry and act out in frustration given the pressures from their careers?