I would look into a joint supplement for both horses, it will help their joints stay more mobile and pain free. For the warmblood, I would also consider a hoof supplement to improve the quality of her feet. I use SmartFlex Senior on my 22-year-old gelding (who thinks he’s 5). You can compare the ingredients of different supplements on SmartPak’s website. They also offer trial packages of supplements so you can see if your horse will eat them.