I was using the punchbag at the gym early on Saturday morning, just jab-straight combinations and trying to work on power for the second punch. What I experienced was a pain in my head when I hit the bag full force each time. It was early but I don't think I was dehydrated, and I was just using weightlifting gloves rather than boxing gloves. I wasn't whipping back the second punch, trying to follow through instead with my body weight going forwards.
I was wondering if anybody else has experienced anything similar to this. Am I absorbing some of the impact somehow, like a recoil? Would boxing gloves be a more sensible idea for me?
UPDATE: No issues this weekend. I would say it was down to dehydration that morning. Exhaling as the punch lands, as suggested, worked great. I'm pretty sure I was doing that previously, so it must have been dehydration.