In a Finnish study, high rein tension was found to be associated with trotters opening their mouths, indicating pain or ...

The first time I rode a horse in running reins, I was trying a horse to buy, I felt a sense of fragility through the reins and I didn’t like the lack of conversation I had with the horse.

“All horses and ponies need turnout ... only wear you out “I often see people running around collecting rings aimlessly with a sharp lead-rein pony hoping this will quieten it down.