I've slid out on sand spots a bunch of times and ice a few times. Bent two pedals. No helmet any times. Some minor scrapes under the blue jeans.
One time i was doing an s curve and the front wheel zipped out. So i let my torso twist to the left and did a perfect 4 paw landing. Palm heels and the soft spot under my knees. All 4 spots just had pavement and pebble dents.

Also during my last school year i was playing pickup hockey and fell twice on both my unpadded elbows. Im sure they were
both cracked but i didn't go for x-rays. Didn't want casts or lost school time. So anyway, they just hurt when leaning on them. I think there was a chip floating for 10 years. haha