I have a 15 year old Arabian mare, about 14.2 hh, who at the moment is about 100 lbs overweight (cresty neck, etc.). I purchased her in January and she was very well loved, just not maintained (fed corn and round bales, no hoof work, no vaccines, wormer, etc.).
I've gotten her to drop about 75-100 lbs so far and am introducing her slowly back into work. My current saddle is about 26 lbs and I'm about 155 lbs. I've heard that 20% of the horse's weight is ideal. That means at her ideal weight, she could carry about 160 lbs. So, atm, with my saddle and equip we are probably teetering at about 190. I've already dropped 20 lbs off myself because I was worried, not sure if I need to do more?