doTERRA Performance Advocate and professional tennis player Sloane Stephens was recently interviewed by GQ about the 10 things that she absolutely cannot live without. “Essential oils are so essential to my life,” she said. She also shared one of her favorite ways to use essential oils—combining Peppermint and Frankincense, which she first inhales and then rubs on the back of her neck. “When I start sweating, I feel the Peppermint on the back of my neck. It’s, like, amazing!” Check out the rest of her interview on GQ’s website.