Feed your horse good quality feed, keep to a regular farrier and deworming schedule. My horses go to the chiropractor twice a year or as needed, liniment after every ride, BOT mesh sheet, ice boots after strenuous workin hot weather, poultice legs and hooves after hard work. Also standing bandages to support and prevent stocking up when working hard and in a stall rather than in a large field when they can move around.
I use veredus magnetic 4 hours before training, cold pacs after and Arnica Hot for the night. Also magnetic treatment once a month and massages.
I use liniment/after work spray after rides (especially hard ones) as well as a BOT mesh sheet with neck overnight to help with recovery and keep muscles loose
I use cold hosing, liniment, and chiropractic work.
I use a theraplate every once is a while
I use ice boots, back on track wraps and blanket, chiro, poultice when hard work, and occasionally trail ride after intense horse showing
I do chiro, rock tape, and joint supplements, and ice boots
Huge fan of ice boots. If you don't want to fork out the money until you know how they work for your horse, make them using otter pops or borrow a pair. :)