Here are some details on how glycine may contribute to better sleep:

1. Increased melatonin production: Glycine has been shown to increase the production of melatonin, a hormone that regulates the sleep-wake cycle. Melatonin is often used as a supplement to improve sleep, and glycine may help your body produce it more effectively.
2. Improved sleep onset: Glycine may reduce the time it takes to fall asleep, also known as sleep latency. Studies have found that taking glycine before bedtime can help individuals fall asleep faster.
3. Deeper and more restorative sleep: Some research suggests that glycine can improve the quality of sleep by increasing the amount of time spent in deep, slow-wave sleep (SWS). Deep sleep is crucial for physical and mental recovery, and glycine may enhance its duration.
4. Reduced sleep disturbances: Glycine may help reduce the number of times you wake up during the night, as well as the overall time spent awake during the night. This can lead to a more uninterrupted and restful night’s sleep.
5. Enhanced daytime alertness: Improved sleep quality due to glycine supplementation may result in better daytime alertness, cognitive function, and mood. This can lead to an overall improvement in daily functioning.
6. Stress reduction: Glycine has also been linked to stress reduction and anxiety relief. Lowering stress levels can indirectly contribute to better sleep quality, as anxiety and stress often interfere with sleep.
7. Safe and well-tolerated: Glycine is generally considered safe when taken as a supplement and is well-tolerated by most people. It does not typically have the side effects or risks associated with some sleep medications.