Originally Posted by Wallaby
There's also a difference between traveling hollow and having a high headset. =) Lacey has a naturally high headset and imo she doesn't travel hollow. Atleast, I've never been told she's hollow... Haha
A horses back will sag a little with age. That is what I have seen in pictures you have posted of your horse. She looks quite good for a 24 year old mare. Being overwieght and not ridden will cause some atrophy in the back and abdomin causing the "sway". I think more sway back horses are produced from overfeeding than from starting them too soon or riding them too hard. In fact I have seen very few horses that are ridden hard develop sway backs. Just like you don't see too many personal trainers with huge beer bellys. They use the muscles and keep them in shape.