Challenges are competitive activities you can initiate with a Fitness Buddy, including Spot Walks, Power Walks, or Workouts. Participants strive to earn more stars within 24 hours to win the challenge. Behavioral experts highlight the importance of a supportive community with shared goals in driving behavior change and achieving success. Thus, engaging in Challenges not only fosters interaction but also contributes to your weight loss and fitness journey. This feature can be found at the bottom of the Social Tab, accessible by tapping the fourth tab at the bottom of the screen.