Foaming in between the legs

Buzz has only really started to do this.
I have been told it's a good thing but was wondering if someone could elaberlate on why it is?

Thanks

When that happens to my horses it's usually the hind legs up by their rump and it's simply sweat - like the way a horse will lather up on their necks when hot and worked.

Yer I thought it was, but a lady yesterday said it ment they were working well or something and I didn't see how that would work.

As your horse gets into better condition, they stop foaming "lathering" and it will be simply sweat.

Working well or not, most horses with lather up down there when they work up a good sweat. I think the only exception would be a horse that was too thin or had horrible conformation and their butt didn't rub together.

Sonds hinky to me. My horse can be working porly and work up a sweat or working like a rock star. He has but issues anyway. I tell him it is ok I have hip issues.

Just means they're sweating.

Probably what that lady was talking about that it meant they were working well, although not in the same spot lol, is when a horse foams at the mouth with the bit. Usually means the horse has a relaxed jaw, is mouthing the bit, and is taking the contact.

The foam is from something rubbing up against the sweaty part. I.e. The reins against the neck.

I was always told that it means they are using the muscles in their hind end more so it sweats more there.

Yup, it's just that the horse is working/sweating, and with the legs rubbing together, the sweat lathers/foams up. The same can happen on the neck if the horse is sweating and the reins rub on the neck. It's just like when we wash our hands. We put soap on them but when we rub them together, they lather up.

And once you get your horse into better condition, the lather stops, and it's just water sweat.