Dean Zimmer is no ordinary drummer. Zimmer has arthrogryposis, a rare congenital disorder that makes it difficult to move his joints, according to the Los Angeles Times. Despite being restricted to a wheelchair, Zimmer pursued his dream to be a drummer. In fact, due to his limited range of motion, his drumming style maximizes efficiency. The fact that he always from the heart is a testament to his love of music and staggering levels of will power!