does anyone know anything about the forces required to get a concussion without hitting your head?

i always hear this concussion fact thrown around, but wondering what kind of force is actually needed to get a concussion without hitting your head.


previously four concussions - tripped over a cord yesterday and didn't fall but head jolted. increased symptoms since then.

telling myself people trip all the time but wondering if anyone knows what is required to get a concussion without a head hit? i always hear that it's possible but wondering the circumstances it would take. thank you