Blue Light Before Bed Stops Melatonin Production
Blue light (450–480nm) suppresses melatonin, the hormone that controls sleep. Studies show blue light exposure before bed can reduce melatonin by up to 50%, making deep sleep harder to reach.
You’re Sleeping At The Wrong Time (Circadian Rhythm)
Your body follows a circadian rhythm controlled by light and darkness. Sleeping at inconsistent times confuses your internal clock and reduces deep sleep quality.
Stress and Cortisol Keep Your Body Alert
High stress increases cortisol, which keeps your body in a “fight or flight” state, preventing deep sleep and keeping you in light sleep instead.
Your Room Is Too Bright
Even small amounts of light can reduce melatonin and deep sleep. The brain thinks light = daytime, so it keeps you in lighter sleep stages.
Temperature Is Too High
Deep sleep happens best when your body temperature drops. If your room is too warm, your body struggles to enter deep sleep stages.
Alcohol Reduces Deep Sleep Quality
Alcohol may help you fall asleep faster, but studies show it reduces REM and deep sleep, causing poor recovery and fatigue the next day.
You Snore or Have Mild Sleep Apnoea
Snoring and sleep apnoea cause micro-wakeups throughout the night, preventing you from staying in deep sleep long enough.
You’re On Your Phone Before Bed
Phone use before bed stimulates the brain and delays sleep. The brain stays mentally active instead of preparing for deep sleep.
You’re Not Getting Enough Sunlight During The Day
Daytime sunlight helps set your circadian rhythm. Without sunlight exposure, your brain doesn’t know when to produce melatonin at night.
Your Brain Is Mentally Overstimulated
Working late, gaming, social media, and bright screens keep the brain overstimulated, preventing the brain from entering deep sleep.
Why You Keep Losing Focus
Modern screens, artificial light and constant stimulation are affecting your brain’s ability to focus more than you realise...
Learn More
Why You're Not Getting Deep Sleep
Deep sleep is affected by light, noise and your sleep environment - and most people are disrupting it without knowing...
Learn More
How To Optimise Your Recovery
Recovery is when your body repairs, rebuilds and grows - but it only happens under the right conditions...
Learn More