Completely agree Corporal!
However, if Duffy has had a day off, I think- lunge first, warm her up, relax her, let her go a bit more forward and get her listening to me. If she decides to have a buck and a fart before I put the saddle on and ride I'd rather she did it on the lunge ;)
How utterly ridiculous to think a horse shouldn't sweat. I appreciate everyone enjoys different things in the horseworld, however I truly want to get in to it as a sport... sweating is second nature! Glad I have a horse walker on my yard so I can go upstairs and have a cuppa!!
If you know how to lunge properly the benefits are amazing, if you want your horse to run around in circles, well... your choice :S
I will admit, if my horse is being a muppet, I send them forwards, and forwards until they get it out of their system... but under saddle too ;)