Does getting knocked out of any kind matter? Or is it just by a fist or foot?

I've been knocked unconscious several times snowboarding & skateboarding.

The minute you pop the back of your head on some asphalt or packed snow at 35 miles an hour...your ass is out!

Trust me...the sensation of coming to is pretty cool...but I wouldn't advise going out there & crowning yourself on some street corner...the pain you suffer to your melon for days is not quite as exhilarating.