Never had an injury that's required doctor/hospital treatment. One time I kicked a glass window in and got some cuts on my leg that healed up by themselves. Another time I accidentally burned my hand on something and got a giant blister on my palm (then accidentally ripped it while climbing over a fence a couple of days later). Oh, and one time I fell off my bike (well, went flying over the front of it to be precise) which resulted in a cut on my elbow that got infected, but it healed by itself. That's about it.