You've fit your saddle, you are training correctly, you've eliminated pain...don't underestimate the role of nutrition when it comes to developing muscles. Esteemed equine nutritionist, Clair Thunes, PhD, talks about the critical role of correct amino acid profiles when building muscles and gives advice on how to determine if your horse is getting what it needs to have a beautiful topline. More info at www.equitopiacenter.com.