[Everything doTERRA] knee pain after running

My husband (age 44) has knee pain after he runs a longer distance (more than 6 miles). What would you recommend to either prevent or treat his knee pain?

For background, he runs regularly. The knee pain has been going on a while, but he doesn't always run more than 6 miles. So, it doesn't bother him all the time. He's training for a 10K race, and so now he's running longer distances. He doesn't really do anything for the pain. He just deals with it. 

Thanks for your help.

Lisa

www.mydoterra.com/LisaBoyle

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