Four-time Grand Slam champion Naomi Osaka can afford to pick and choose her sponsorships. Osaka is one of the few athletes who can equally balance performance, activism, and style without missing a beat. In her latest partnership, Osaka has teamed up with OLLY for Mental Health Awareness Month. The tennis icon and the popular wellness brand officially kicked off its "Do What Serves You" campaign today. It is designed to encourage women to honor their minds and bodies and choose themselves without guilt. Why Naomi Osaka Partnered With OLLY Naomi Osaka for OLLY. | OLLY "This partnership is personal to me—I've used OLLY products for years, and I'm deeply aligned with what they stand for beyond their products," Osaka said in a statement. "For me, 'Do What Serves You' means finding small moments in the day to just pause and be with myself.…