So I'm sparring with this guy the other day, we were doing kicks to the body and light punches to body and head (no headgear). So I'm recovering from a kick when BAM! I catch a foot right in the jaw. Naturally I'm like WTF! Then I thought to myself I shouldn't get mad when I should have had my hand up anyways. So then I went to block one of his kicks and WHAM, he slams his foot right into my elbow! Made me feel a little better except that the next day was my cheat day and I could barely chew my hard earned pizza.
The lesson here kids is keep your freakin guard up no matter what.