I'm feeling good and looking forward to Indian Wells! Thanks @USANAinc for helping me feel the best.

A post shared by Caroline Wozniacki (@carowozniacki) on

Caroline Wozniacki talks the serious of nutrition (with the help of USANA), and whatever she's doing, seems to be working really well.

"Nutrition is like fuel in a car," she said. "You can drive the best car, but if you doesn’t have the right fuel it’s not going to go anywhere."

Wozniacki has been running full-speed ahead lately, reaching back-to-back WTA Premier finals after ending the 2016 season with two titles. She's climbed all the way back to No. 14 after nearly dropping out of the Top 100 last summer.

USANA does a lot more than vitamins, providing nutritional supplements, protein shakes, healthy energy drinks and even skin products for athletes who need to take extra care of their bodies with pure and healthy substances.

USANA is the official vitamin of the WTA tour.