Zero is a beautifully designed tracker used for intermittent, circadian rhythm, and custom extended fasting. As the largest app-based fasting community in the world, Zero makes it simple for you to harness the power of fasting to improve your health. Zero’s advisory team includes some of the world’s leading doctors and researchers, including our Chief Medical Officer Dr. Peter Attia, who guides our fasting protocols and content creation. Zero makes fasting simple: * A beautiful, thoughtful design makes it simple to start fasting * Earn badges to celebrate your fasting milestones and stay motivated * Set a weight goal and track your progress * Visualize your fasting progress over time * Reflect on your fasting experience with the post-fast journal * Weekly articles created by our expert content team to keep you informed and motivated * Group fasts and events with prizes from the biggest names in health and fitness