01:41 AM EDT 12/22/2014
Originally posted 09/05/2012 04:30PM
Bradley Cooper lives a relatively tame life these days, but that wasn't always the case.
The actor, 37, who stars alongside Zoë Saldana in The Words, has calmed down a lot since his 20s.
On one occasion, "I was at a party, and deliberately bashed my head on the concrete floor," Cooper recalls for the Hollywood Reporter in its Sept. 14 cover story. "Like, 'Hey, look how tough I am!' "
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