Understanding sleep science reveals practical ways to improve your rest at home. Evening light, particularly from screens, disrupts your brain’s sleep signals by suppressing melatonin production. That’s why it’s important to keep your bedroom dark during sleep. Next, bedroom temperature should be kept between 16 and 20 °C to support your body’s natural nighttime cooling process. Keeping consistent sleep and wake times is critical, since irregular schedules have been linked to long-term health issues. Disruptions to your routine can also lead to what’s known as “social jet lag”—a misalignment between your internal body clock and your daily schedule, often leaving you feeling tired for days. Daily habits matter too. Caffeine, for instance, can reduce sleep pressure for up to eight hours, and while alcohol might make you feel sleepy, it actually fragments your sleep architecture. Even exercise requires careful timing: morning workouts, especially outdoors, help regulate your sleep cycle, while intense evening exercise may delay sleep if done too close to bedtime. For daytime fatigue, try a “nappuccino”—drinking coffee before a 20-min nap lets you wake just as the caffeine kicks in. When used properly, these science-based strategies can significantly improve your sleep quality.