Waking to loud alarms can be a shock to your system, triggering a fight-or-flight response. New research suggests a gentler, light-based wake-up can protect your heart and improve alertness. Gradual light mimics natural dawn, easing the transition from sleep. This method helps reduce morning grogginess and stress hormone spikes, offering a healthier start to your day.source https://timesofindia.indiatimes.com/life-style/health-fitness/health-news/why-waking-up-with-light-and-not-noise-can-be-better-for-your-health/articleshow/125569180.cms