Ok as a supplement lay-person I need help I have a 15.2tb, she is a good do-er She has a lovely grass paddock and gets 2 feeds and hay per day Chaff, Kool n Kind and Mill Mix and hay and (I stand by this statement) is the fastest eater I've ever met in my life and a complete piggy pants. About 2 months ago I moved her to this new agistment, she came from a largely sandy paddock with a meadow hay roll and hard feed at night where she tended to get disproportionately fat in her belly and put nothing on her neck (despite my long and low work) so I think her diet was lacking which I put down to the meadow hay? (I think). On her new diet she is looking fab, the mill mix has helped tremendously with her condition and we have a lovely neck now!. BUT I have always had trouble with her out and about. She can be fizzy and can be quite naughty or a perfect angel at times. I have been trying her on Chaste Tree Berry to try and control the mare-isms and she was quite good at our first outing after being on it for 2 weeks. I have been told Magnesium can help calm her down, What do you guys think? I've tried giving her Magnesite from the stockfeed a few times but she was funny about eating it. Although now I think that's the tree berry taste as it was about the same time and she still leaves about a handful of feed Suggestions? or should I cut something else out? She IS better if I ride for an hour or so in the 3 days leading up to it, but I'd rather not have to rely on exhaustion for a nice day out!