So my horse Nemo was pretty scrawny and had little muscle tone when I first got him almost a year ago. He's gained lots in both since then and he quite fit now, but I find he having a hard time gaining muscle in his back. He has a high weathers and since he's only 5 years old I find this odd. I guess it could be genetics?
I would like idea's and suggestions on building this and muscle in general. Feed? Exercises? Stretches? Lunging? Let me know!