
This is so filled with controversy! I am going to try and share all sides of this. So, I guess I am saying, it depends.
From my experience, there are so many areas of "horses" that tones my stomach and riding is only one of them. Did you see the movie Karate Kid? Wax on, wax off? Well, when I groom my horses, it works and tones all the stomach muscles. My horses are 16'2, 1300 pounds, and they lean into grooming. That means I lean back. I use two brushes or two mitts at the same time so I get double the workout. I would definitely say that if you want grooming to tone your stomach, than yes, it can.
The second area that tones my stomach is mucking, or any chores. I really focus on my core lifting the fork and then lifting and carrying the muck bucket. Carrying bales of hay and feed buckets. Pulling weeds in the pasture (bonus 100's of squats on this one). All are great for working on your core, if you focus on those muscles as you do the work.
Now for the original question, does horse riding tone your stomach?
Well, this depends. I have been on both sides of this. Ok, there are probably many sides to this but here are my two. Riding jumpers uses the abs. I definitely tone my stomach training and showing jumpers. When I don't ride for a bit, boy, I feel my abs after I ride again. The other end of the spectrum is a lovely relaxing trail ride. I think I still used my abs some, since when I did most of my trail riding, it was bareback. But nothing like jumping. I think there are ways to use and tone the core no matter what riding you do if you place focus on it. Even trail riding, if you do lateral work on the trail, moving the horse to the right and then to the left, you could engage your core.
I think a lot of it is what you are focusing on while riding and if you are trying to tone your stomach.
If you would like some ideas on grooming (#2 is what I do for my core and my horses coat), just click here to get my free guide, 3 Ways to Keep Your Horses Coat and Skin Healthy!

That feeling of just keeping our head above water, like we are going to sink at any moment, can be worse for those of us with horses. They are an expensive passion. The fear of vet bills to care for our furry friends. The anxiety of maybe having our job go away. All of this stress and anxiety can affect our horses.
We may not realize it, but when we go see our horses, if we take that financial anxiety with us, they can feel it. They don't understand it. They understand that it is anxiety and we are stressed and their life depends on recognizing stress. I think anxiety could be one of the reasons horses shut down, to protect themselves from all the anxiety that is overwhelming to them. The opposite ones are the ones that get really spooky, looking for what the heck we are afraid of. Where is it? They don't see it.
So, how do I deal with anxiety over finances?
First and foremost, I know in my heart that God will provide. I have always believed this. It is how I got my first pony when I was five, that my family didn't have the money for. I believed God would provide a pony and I had a pony. During times of trouble, where I didn't have the money to make it to the end of the month, I trusted. A random check would show up in the mail that perfectly covered the rest of the months bills, or I would get a job offer that was just perfect.
The second thing was implementing a system for my finances. I tried a bunch of programs but the one that worked for me was T. Harv Eker. His system worked amazing, and I was able to build a cushion and pay off all my bad debt. Yes, there is good debt. It is debt that earns you money.
The third thing was talking to others, especially horse people that were making it happen and had the life I wanted. How did they do it? Having honest conversations with others that were where I wanted to be really helped.
When I go see my horses, I leave the anxieties I have behind. I don't carry them with me to the horses. It isn't fair to them.
My free guide, The Ghosts of Anxiety - Past, Present, and Future, might help a little more if this resonated with you.

Sarcoids are so frustrating, but I have had great results with all the ones I have had on my horses.
I walked into our three-sided shed one day, and there was blood everywhere. I was shocked. All three mares were standing their, quietly munching their hay and it looked like one of them had lost a leg. I searched and searched, running my hands all over them and nothing. Fresh blood and it just appeared out of thin air.
I sat down in complete frustration, not knowing if my horse was going to die or even which one. As soon as I sat down, I could see the Sarcoid, between my mares thigh and her udder, up as far as it could be. It was about the size of a golf ball and I could see where it must have burst and then clotted over. This would not be the last of the blood, or the sarcoids, but I knew I had to do something until I could get the vet there.
I called my vet friend that uses Young Living Products since I knew I had a bunch of stuff on hand and might be able to help my poor horse. Here is the protocol she recommended twice a day until the vet could get here:
First, clean really well with Thieves Cleaner - 3 capful strength in 16 ounces of water.
Dry really well.
Gently rub in this blend: (it lasted me about 5 days, twice a day)
Copaiba - 20 drops
Purification - 20 drops
Thieves - 10 drops
Longevity - 10 drops
Tea tree - 20 drops
Cover with Animal Scents ointment (I mix with a tiny bit of coconut oil to get good consistency to apply).
It took a few weeks but the sarcoid disappeared before the vet came. She had a few more pop up and he was able to see one and confirmed it was a sarcoid and was surprised that the big one had gone away.
Usually, sarcoids go away on their own but not always and it is important to have a vet look as soon as possible. The above supports the healing along with what the vet needs to do.

Mounting your horse, with the thought of "throwing" your leg over, sends you into fits of pain just thinking about it. It really could be any stiffness or pain. Think about it from your horses perspective. Horses rely on healthy, strong, horses to be their leaders. The ones that are weaker or not up to the job, get pushed to the bottom. It is the survival of a prey animal, to make sure the weak are not amongst them.
So, do you need to be fit to horse ride? No, but it helps tremendously with the trust of your horse. Also, if you are stiff and/or sore, you are not going to react to situations as fast as possible to keep yourself safe. This can compound anxiety and fear. Also, I know for me, when I am stiff, I tend to slouch and ball up. I don't have the tall, looking to where I want to ride, poise, not sure what you call it, but I don't have it when I am stiff.
Think about the amazing riders, you see dancing with their horses in the dressage ring, or the jockeys, riding the horses flying down the track. The jumper riders and cutting horse riders that have to be nimble and have reflexes that rival the best in the world. Those riders are not going to perform to their best and their horses will also be challenged if the riders aren't fit.
In a related way, fitness also gives us the energy to ride and care for our horses. It takes strength to groom, tack up and ride. It takes strength to dance with your horse as you ride and not just be a passenger. Fitness is so key in my opinion to the relationship with your horse in all of these ways.
If you would like some ideas on getting fit, get my free guide - 5 ways to feel like a kid again! Click Here!

I would have said NO WAY. I had tried everything.
When I was 5, I wanted my aunts to sit on the floor and play a board game with me. They declined and said they would be in too much pain. I remember I was shocked. I vowed right then and there; I would NOT be that person that couldn't sit and play a board game with the kids.
Fast forward 50 years and guess what, I was that person. Not only could I not sit on the floor to play a board game, but my horse riding had suffered since I just had lost my flexibility and was so stiff and sore. Even putting on my socks was a challenge.
I tried this and that and there was improvement but not a complete solution. I tried yoga but hated it. I tried exercising but I already get enough of that with the farm. I tried eating different but that was just a challenge to know what to eat, what not to eat, I just didn't have directions. What happened to our owner's manual? Life would be so much easier.
Well, the wonderful Marth Krejci, gave me the owners manual. It came in the form of an 11-day jumpstart that I did the beginning of January. It has the food to eat. When to eat it. The Water to remove the toxins. The supplements to latch on to toxins and allow the water to remove them. It was easy. Step by step. For the first time in years, I am looking forward to spring riding! I am looking forward to the grandkids visiting.
I feel GREAT! The flexibility and balance I have gained reduced my anxiety getting on my horses!
If you would like to check out the 11-day program (and the bonus stuff I am throwing in for horse people!), just click here!