This is what endurance is all about. My horse does the head flip thing
and I believe it is a " Mom! I feel Great! action. I ride also in a
Vosal with loose reins. I know my horse very well and when he's out in
pasturem he'll do the same maneuvre just prior or after some nice bucks.
I can pretty well gauge how he's feeling by how many of these he does
during a ride.
Happy Tails
Susan & Sabian