• Mood and mental health – Light exposure regulates serotonin and melatonin, influencing anxiety, depression, and emotional stability.

• Sleep quality – Poor lighting at night or lack of daylight exposure can disrupt the body’s natural sleep-wake cycles.

• Productivity and focus – Bright, daylight-spectrum lighting boosts alertness and cognitive performance during the day.

• Eye strain and headaches – Harsh or poorly positioned lighting can cause discomfort and long-term eye fatigue.

Your circadian rhythm is your body’s internal clock — a 24-hour cycle influenced heavily by light. When synced properly, it helps regulate:

• Sleep and wake cycles

• Hormone production (like cortisol and melatonin)

• Digestion and metabolism

• Cell repair and immune function

Modern indoor lifestyles with artificial light at night and minimal sunlight during the day can throw this rhythm off track. This leads to poor sleep, mood swings, weight gain, and even chronic disease risk.

Blue light is a high-energy visible (HEV) light emitted by the sun, and also by phones, computers, TVs, and LED lighting. In small amounts, it's beneficial. But overexposure, especially in the evening can..

• Suppress melatonin, making it harder to fall asleep

• Disrupt circadian rhythms, leading to fatigue and brain fog

• Contribute to digital eye strain and long-term retinal stress

Managing blue light through smart lighting, screen filters, and evening routines helps protect sleep quality and eye health, especially in kids and screen-heavy homes.