When getting out of bed, he underwent a kind of "ablution": he was massaged, his shirt was changed because he was sweating quite a bit, and then a small amount of wine was sprinkled on his hands, which he also used to wipe his face and rinse his mouth.
During the day, when the king participated in some physical activity, e.g. fencing or dancing, he was sweaty and changed his shirt again every time he felt the need.
Thanks to this, he was considered a great pedant at court, changing his shirt up to three times a day.