Originally Posted by Veeva La Vegas
I can ride both western and english but I favor western because you don't have to sit up straight, Actually sitting up straight hurts the horses back it is better to slouch when you can.
I'm afraid that that's far from true and a misnomer to many riders.
Slouching in the saddle is not good for your horse or for you. You don't need to remain in a stiff back position, typically, but you should always be sitting up and in balance with your horse. Slouching leads to poor balance and consequently is uncomfortable to your horse.