On Jennifer Lawrence’s last day of training for The Hunger Games, the star, ran into a wall, literally, and almost suffered some major internal injuries.

Lawrence told The Hollywood Reporter, “I had to do 10 ‘wall runs,’ where you run at the wall as hard as you can to get traction. I ran at it and my foot didn’t go up, so I caught the wall with my stomach. My trainer thought I had burst my spleen. I had to get a CAT scan and go into a tube where they put this fiery liquid in your body.”

She was just bruised and production was able to continue.

On top of wall jumps, Lawrence and the other members of the cast and crew also had to deal with 100-degree weather, drenching rainstorms and even bears while filming the first of four films. Apparently there were over 300 bears living in the woods where Games was shot.

The Hunger Games hits theaters March 23.