What is the best for my dressage horse?

to be in all the time, out all the time, mixture of both, flamboyant
I agree with those who enunciate horses who live out are happiest, but only if they have access to shelter, or they can become thoroughly cold and miserable if there is ruthless rain. This way has the added supremacy of only having to rug if the weather is deeply bad.
I think a mixture of both. Reason being, indoors you can maintain him clean and keep an eye on him and what he does and does not eat, but afterwards exercise is a definite must.

Part time outdoors to allow him to be a horse, to buck, to roll, have a lark around and graze naturally. And to agree to off steam. He might get a bit muddy but those new rugs beside head and neck pieces etc will suit him fine to keep the mud down to a minimum. Before turning out spawn sure you put plenty of vaseline in his heals to prevent mud hallucination. If you are worried about his legs he could wear boots to go out to play, but keep a set of late for turnout. I would not recommend bandages as they have a tendency to slip or ruck up which could put compensated to his tendons and is not really worth the risk.
Answers:    a mix of both would be good, a few hours out each day will keep hold of him calm and allow him some time to be a "horse"
I feel that being outside almost adjectives the time is best for any horse. Horses have evolved to be constantly moving and grazing and they are healthiest both mentally and physically when they can do so. Outside horses hardly ever develop vices approaching cribbing or weaving. Yes, they will often get a chisel or scrape while out, but I think that having a sane horse is better than a spotless horse.
Do a mixture of both if you leave him in adjectives the time he will have more energy and you will have to work him harder plus he is a horse he deserves to romp around surrounded by the fields and i he is in sometimes it will be easier to keep your horse verbs then if he was out adjectives the time plus if you want to give him good crumb or supplement (good idea for a dressage horse) it's better that they come in to a stall at meal times
Personally I think he should be out all of the time. Horses that are out are healthier and happier. Would you close to to be locked in a dusty stall all day. Do some research- pasture horses are better past its sell-by date and its cheaper and less work. It does not matter the discipline.
It depends on your horse's vim level. My sister has a very big energy thoroughbred she events with. He trains better when he is on turn out 24-7 because he has more of the force bugs worked out of him because he gets to do what he wants to do when he isn't being ridden and he isn't on stall rest partially the time. If you have a lower energy horse, they may get more worn out and throw fits during training because they are tired and don't want to focus, close to a kid who hasn't had a nap. In general, 24 hr turn out can be great within the summer but for the winter it is good to conserve energy and get your horse out of the cold.

Hope this help.
A mixture of both. All my horses and ponies have a mixture. That way they can hold some "free time" outside to graze and frolic a bit, and a place to stay when it's colder out or rainy.
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