Just to add to the 24/7 horse turnout.
I have a 35 year old pony mare that flat out refuses to go into a stall. She will plant her feet and will not budge, once she is inside she is very restless and will pace the entire time she is stalled.
I also have a 9 year old gelding who was put in a stall once...and he came out...all by himself, from a dead standstill he jumped the door. He drew blood on his hind legs and gashed himself just above his eye, yes the vet was called, this all happened because he could not stand to be confined.
Both animals have great winter coats, I blanket them on the cold days, they have shelter, water and free hay all day and night.
Now am I wrong? Should I confine these lovely animals to the stall because I don't like being cold therefore they don't like it either? Or should I stall them and have my gelding continue to gash himself open and have my mare go into a tizzy? (This of course is a no brainer...for most of us anyway).