My horse had the same problem, I taught her to drop her head when I pulled out and down on the reins (I looked ridiculous teaching it to her but once she leaned dropped her head great) every time she gets hot I ask her to drop her head and it helps her to calm down 😊 hope this helped
Your horse might need to learn his job. Teach the horse that when they jig they aren’t getting anywhere faster. Teach the horse this by doing lots of transitions especially when they jig. They need to know this is not allowed. When they start to jig let them know this is not allowed by doing a gentle tug on the reigns(making sure not to make the mouth sore). You want to make sure not to try and always calm down your horse by making him run because then he will get to fit and be able to over power you.
I have already checked his feed with the vet and I will try the others. Thanks guys!
Same things as precious answers however, Check the feed you're giving him. Some feeds and supplements provide with a lot of energy and that might be a reason why he is so hot. Also if he's on haylage you might want him on hay for a while or mix them up to balance the sugar intake.
Same as the previous answer. Lunge on a line or free lunge until you feel he’s burned enough energy to be rideable. You can also, when riding, take breaks and have him stop and breathe to help settle him when he gets hot. That also means getting off and walking him if necessary for a little bit before getting back on. During the colder months, you want to try and exercise him as much as possible. If you can’t, having him in the pasture with some other horses to blow off some steam really helps a lot too! :)
Circle him until you feel comfortable to ride him, circle him at walk trot canter if he doesn’t go the speed you want(too fast)