What steps can individuals take to prevent unauthorized access to their health data when using wearable devices to track their fitness and activity levels?

Individuals can prevent unauthorized access to their health data by setting strong and unique passwords for their wearable devices and associated apps. They should also enable two-factor authentication for an added layer of security. Regularly updating the software on their devices and apps can help protect against known vulnerabilities. Additionally, individuals should be cautious about sharing their health data with third-party apps and services, and carefully review privacy settings to limit the sharing of personal information.