Every concussion I've had came from a horse
Mine were mainly from Falls. By myself!

LOL One was when I was very young and stupid (Maybe six?) and stood up in a wagon while a boy pulled me. Of course I fell backwards. All I remember was opening my eyes and seeing my mom running toward me, sideways. (I was on the ground) I think I was momentarily out for a while.
The one from the horse was about 1983. I was on a green horse, bareback, while a guy walked the horse. (Is there a pattern here LOL) He said the next thing he knew, he turned around and I was gone! I was face down on the ground and out. Next thing I remember was an ambulance backing up into the area.
Next one was here, helping my husband stack hay. I was two rows up and if you've ever walked on hay, it's very unstable. I was talking Non-Stop, excited about something and just not paying attention I guess. And I went face down onto the plywood on the ground. It felt like someone hit me with a 2x4 ! That was one of my worst. Could have broke my facial bones. Or my nose. Just a huge black and blue face. A week or so later I was sitting at my computer and feeling dizzy. Couldn't get up without feeling like I was going to pass out. Called a friend who called an ambulance who took me to the hospital. It was just part of the concussion and sitting in front of a computer, which is bad after a concussion, (I didn't know that) and not eating that morning. But I was in there for a few days while they checked out every other freaking thing. It was awful. I think their main concern was why I fell in the first place. They thought I passed out. Like maybe it was my heart or something. I said, Nooo! Go walk on some stacks of hay and tell me how easy it is.
Another time I looked outside in the back and the Sun was making a beautiful picture on the trees that Frosty morning. I grabbed my phone and quickly went outside for a picture not realizing the deck was icy! Fell backwards onto my head once again. Almost knocked me out. I felt nauseous and I knew it was bad. I was starting to recognize what a concussion is! LOL
And the last one I remember was here again, running into our sunroom to close windows during a storm. We had forgotten about those windows and it was like a tornado in that room! Rain was pouring in onto the floor, the wind had knocked out the screen and blown down the TV...it was chaotic! But I went flying in there in my panic and, of course, slipped and fell on the wet tile floor, hitting the back of my head. Are you starting to feel dizzy yet?? LOL Yeah, there's been several so I guess I got to learn to slow down.

That's why my son said, if you fall you're going to die.