From the bike: zero
As a child: many...too many to count!

As an adult:
1) I played rugby in college and had many a trip to the ER with other teammates...only went once for myself and it was in an ambulance. Trashed everything in my ankle...was screaming in pain. Not pretty.

2) When bartending I broke a wine glass in my hands under the water (while washing it) and just about sliced off my index finger before realizing what had happened. Got 4 stitches and a lovely scar. It was really cool to watch them stitch me up.

3) Making iced tea...accidently poured a pot of boiling water over my wrist because the pitcher tipped over. I suffered through the pain for 2 days until the purple color of my wrist started to scare me. Went to the ER...2nd degree burns. Not much they could do but they gave me some white stuff that really, really worked!

4) Car accident - a woman blew through a stop sign, into me, in the dark and rain, and sent my car into a phone pole. I was ok but taken to the ER in ambulance...I had to pee when I left work but didn't and was strapped to a back board for like 3 hours because of a back up. No one would give me a bed pan. My neck was fine, but my bladder was killing me!!!

5) Snowboarding accident. I fell, on ice...fractured my elbow. It still hurts on long bike rides...