the spring which was broken by me

i was at my fat friend's house and i used his spring to train abit today, when we were joking as i was training and laughing... i bend the spring for many times until around the 12th time when i bend it forwards... it broke into 1/2s as the metal snapped... my fat friend was laughing because it was hard to believe that the spring actually snapped as i was using it... anyway here is a picture of how it was broken