Frozen arenas...

Actually a horse should be lunged on both hard and soft in a vetting/work up - on hard ground lameness is bone related whereas lameness on soft is muscle/soft tissue related :)

Sorry, off topic :)

Yes you are right they should be worked on both, but a hard surface will be more taxing on the horse which, getting back to topic, is why working on frozen solid arenas is foolish and not worth the very little gain, in my opinion :)
 
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