Oh yeah, tree roots will do it all by themselves, tripping or making one slip, been there myself a time or two. Loose gravel over a hard surface makes me slip and do very uncomfortable splits at times. Ouch! I guess on some days this is a contact sport to some degree. Lol

And I can certainly see why a head injury will discombobulate one so the water bottle issue could happen to anyone so that’s a good thing to take note of. Your choice to turn back was a very good idea. I regretted pushing on once.