Yesterday he had me worried. While we were doing our Randori (standing up sparring), we both fell during a throwing technique. His position for the throwing wasn't accurate and so I fell with him. During the fall, my right knee got bended and landed near his groin area. I got worried and asked if he was ok. He had a faster reaction though. He opened his legs wider and it missed by a bit.
Even though it's a combat sport, is it normal to sometimes worry for your partner.