Well I say some people might mistake hot for hyper, My horse is really prances when we finish the barrels, yesterday he wasn't that bad, my step dad barrel raced him though, so ya I think some horses are trained to be hot just some people mistake hot for ready to go. If you can't control the horse its hot and rambunctious and not good to have. You can get your self and your horse/horses hurt.
Trouble rides a fast horse.....(Shrug)..... I ride a faster one.
I'm your HuckleBerry- Doc Holliday, Tombstone.