Ah horses, they can be heaven or ?

I have a 20 yr old nutty one that I'm still 'training" LOL
A bit of a schizo ...but she's pretty to look out the window at...
Some of the weight gain is probably related to the stopping smoking, the body trying to re balance itself. Plus a bit less activity than before if you were riding & active every day.
Try not to stress on the weight too much , eat healthy and take the supplements that you can afford.
Maybe Mark can put the most important ones at the top of the list

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