Our product picks are editor-tested, expert-approved. We may earn a commission through links on our site. Why Trust Us? GETTY IMAGES; MH ILLUSTRATION 2 min read This article is part of Racquet Sport Nation—a series of stories that explores the life-enhancing power of racquet sports, from tennis to pickleball to padel, today. Read the rest of the stories here . WHILE MANY OF us are far from becoming top-ranked athletes, there’s plenty to learn from the pros when it comes to optimizing our health and fitness. From Janik Sinnner’s muscle-building techniques to Novak Djokovic’s devotion to longevity, dig into these tennis pros’ secrets for peak performance. Joris Verwijst/BSR Agency // Getty Images CARLOS ALCARAZ Fitness Game Changer: Sand Footwork Drills Any pro tennis player has to play with agility, but Alcaraz can move . To do so at a high level, the 21-year-old performs lateral movement drills in the sand, teaching his feet to drive up from an unstable surface.…