Sean Penn was spotted in Santa Monica on a lovely El Lay afternoon yesterday.
And boy is he looking jacked!
Like really really fit!
He was wearing a Krav Maga shirt, which is a self defense system used by the Israeli Defense Forces!
It's a bad ass martial art that is like MMA but mainly used to kill people. Maybe he's taking lessons!
We guess those photogs better start using serious zoom lenses.
Don't wanna get too close! LOLz!
Lookin' good, Sean!
[Image via AKM-GSI.]