Sleeping for over 6 hours is beneficial because regularly sleeping for shorter periods of time can cause many health problems, even reducing length of life.
Get at least 6 hours of sleep every 24 hours. Try to be in bed by midnight every night and up by 8am to keep your circadian rhythm (‘body clock’) in line with the natural day-night cycle.
The brain goes ‘offline’ while you’re sleeping. During this period, memories are processed and moved into long-term ‘storage’. This is how sleeping improves memory.
Unsurprisingly, lack of sleep leads to tiredness. Many cognitive functions are deprived when tired [1,2,5].
Having inconsistent sleep patterns can take your body clock out of sync with the natural day-night cycle. This has detrimental effects on the immune system due to a disruption of melatonin production. You are even at a higher risk of developing cancer if you have an irregular sleep pattern .
Some scientists have also argued that general recommendations for sleep duration ignore the fact that individuals vary in their optimal sleep patterns.
Oversleeping can be problematic. Try to avoid sleeping for over 8.5 hours on a regular basis.
Night, ideally be asleep by midnight and up by 8am.