Every trainer has their own way of doing things, and obviously access to different resources/facilities. The really big yards have things like their own swimming pools, salt water horse walkers (salt water is believed to promote healing so a horse with a foot/joint/tendon injury will basically walk in several inches of salt water to help an injury along), solariums, and at one stage Godolphin had (may still have) what was essentially an oxygen chamber for horses. However there was a particularly nasty accident a few years back which I won’t go into detail on.
The smaller yards have to “make do”, there are some public facilities such as swimming pools that you can book to take your horse to, but it’s not the same as popping every horse through every week.
Jumping yards tend to mix up their training more - Henrietta a Knight was a big one for getting her horses to do basic dressage to improve their balance. I wouldn’t be surprised if some flat yards use schooling poles or very small jumps to freshen a stake horse up.
And of course you have the good old fashioned route of sending a jumper out hunting to get his appetite for the game back!
If I may, I will add an example to this.
As I keep stating, i've got a share in Project Mars (runs tomorrow possibly at Hereford) at Fergals yard. He was off for a year with an injury and was rehabilitated at Ivy Lodge by Jason & Lauren Maguire. They have some brilliant facilities and do a few interesting tweets -
https://twitter.com/LodgeIvy
They are set up as a rehabilitation and pre-training yard, so their facilities are very different to those at Fergals racing yard at Withington (well worth a visit if you are ever this way), Jason has water treadmill, hydrotherapy and the like, all with the aim to aid recovery from injuries and return them to soundness as well as they can.
https://www.ivylodgefarm.com/facilities
Fergals yard doesn't have these facilities, their yard is all about getting horses to peak fitness and developing them as racers, so they've got a walker and two gallops (one 1/2 mile hill gallop and a 4 furlong round gallop) which they use to get horses primed for racing. They have paddocks for horses to be turned out into and they are looking at developing more options for horses who are hard to keep sound (bleeders for example). However for other treatments they take their horses to Jason and others.
The aspect of training the horses is an interesting one, and I think you see massive differences in horses due to the location of their trainers and their views on how horses should be developed. Most people flag up Venetia Williams as a trainer of heavy ground horses, and this is probably due to her stables being based at Kings Caple in Herefordshire. The ground in that part of the world is clay and makes it very holding and testing, however in recent years this hasn't been quite the case as they've been using all weather gallops more. Interestingly with Venetia she is a big fan of horses being on grass, and they have fences set up on grass and they believe in turning horses out to grass more than most.
My personal view is that you've got different schools of trainers, those old school trainers who follow the Henrietta Knight approach of horsemanship, the Martin Pipe school of getting them super fit, the Henderson approach of wrapping them in cotton wool and then the Nicholls approach of schooling them and giving them wind ops.
800Gns