Hope I'm not too late here, but I've been doing a lot of heavy practice lately so I've started to learn some tricks about how to do it properly. Although first as an aside I'd like to say, people get waaaay too neurotic about practicing! There is no such thing as perfect, so good luck only ever getting better with perfect practice. Just make sure you know what a good swing is and strive to correctly hit it every time. A child can easily figure out how to practice correctly, I'm pretty sure an adult playing golf can.
Anyhoo, after some painful experience I discovered they make joint supplements that are apparently quite effective for these endeavors. I was getting a lot of wear and tear on my lead hip and through internet recommendations I started taking something called "Animal Flex," which is obviously aimed at body builders but has really helped. They have their own similar supplements at GNC and other places. Then I also started liberally using Bayer Advanced Aspirin to cut down on the inflammation before it happens. If you're someone worried about taking pain medicine regularly you might reference Louis C.K.'s bit about going to his doctor for a bad ankle.
Then also be sure to stretch. After I've hit a few balls and gotten warm I like to take a quick break and stretch my hips and leg muscles. That really can help getting rid of aches and pains, it just seems to stretch things out and keep my body feeling flexible. Those things combined with allowing myself time to build up my stamina early on, have really allowed me to do some intense training.