redcgull, the mares are wound down when they come out of training. Some will need to spend a bit of time on a horse walker before being introduced to a few hours turn out a day, whereas others will go straight out in the field.
A broodmare will usually spend from 8am till 3pm every day in the field, being brought in at night during the winter and the early part of their foals life. Once the foals are strong enough the mares and foals will live out in the paddock 24 hours a day until the weather turns cooler. Once the foals have been weaned (at about 6 months old) they will be brought into a stable for a few hours during the day so that they can get used to being handled.
The routine for a stallion is quite different, firstly he has to be taught that it is ok to act on his natural instincts. A colt will be punished if he shows stallion-like behaviour when in training, so they have to learn that this is now ok. The easiest thing to do is simply bring an in-season mare to him and just let him find his way!
An active stallion has to be kept very fit, covering 100+ mares a season requires a lot of effort. From January each year they will be walked in hand for an hour or so a day, and lunged 2-3 times a week to get them fit. Once the season gets going in full swing, from March/April onwards, they will not require any additional work to keep them fit.
Each stallion will get several hours a day out in a lone paddock to relax and graze, being brought in when duty calls! Some stallions have a tendancy to get fat so will have restricted access to grazing - for example I know DUBAWI is only allowed out in the field for 2 hours a day and has to be stabled on wood-shavings as he is such a glutton that he tries to eat all the straw bedding!
It is very rare these days for a stallion to get ridden exercise, though I think Juddmonte used to ride RAINBOW QUEST around the stud.