The "3-2-1 Rule" is a simple, systems-based model designed to enhance sleep, focus, and energy through intentional evening constraints [1]. It promotes shutting down eating, work, and screens hours before bed to move from reactive habits to proactive recovery [1]. The framework prioritizes setting boundaries to ensure recovery, allowing for sustained performance rather than relying on willpower [1]. Learn more about the 3-2-1 rule in Sahil Bloom's newsletter.