So i've seen these cold water challenges around facebook lately and after this injury you might want to think twice about doing it. Kayla Jacob was hanging out with her brother by a lake when she saw on facebook she was nominated for a cold water challenge. Now after jumping in she split open her knee and damaged muscles and ligaments and rupturing her meniscus. Her injuries will cost the softball standout the remainder of her high school softball season, and running with the cross country team this fall. How sad, next time use caution when doing this or better yet just say no!