I got most of the ideas from HorseBooksEtc.com but Half.com is always my go-to when ordering... by far, the best prices on a regular basis.
Better Rider, Better Ride by Linda Schultz:
A Gymnastic Riding System Using Mind, Body, & Spirit by Betsy Steiner: Her approach to riding "gives comparable attention to the body, mind and spirit of both the rider and the horse as they ascend the Classical Training Pyramid together."
Pilates for the Dressage Rider by Janice Dulak: Both basic and advanced exercises are included, as well as exercises in the saddle. My Best Friend got this book and promises to give us a Guest Blog review of it!
Ride from Within by James Shaw uses Tai Chi principles to teach riding from the inside out.
Ride Right by Daniel Stewart teaches balance for your frame and frame of mind with unmounted exercise and sports psychology.
The Rider's Fitness Guide to a Better Seat by Jean-Pierre Hourdebaigt features three full exercise routines for riders at beginning, intermediate, and advanced levels.
Yoga for Equestrians by Linda Benedik and Veronica Wirth cultivates mental and physical flexibility and balance.
Horse and Rider Fitness by Linda Purves uses simple barn and farm based exercises to make fitness training fun and accessible.
Riding from the Inside Out by Lisa Champion combines the talents of an exercise specialist, physical therapist, and gifted rider to create a new exercise and stretching program to practice off the horse and improve your performance on the horse.
Alright, there you have it. Now lets all get fit during this horribly cold winter so we can wow our trainers and ourselves come spring when its time to get it in gear!