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A decent night's sleep is needed for good health.
Without enough sleep, we can increase the risk of developing health issues such as hypertension, diabetes, obesity, depression, heart attack, and stroke.
Studies have shown that after going several days without sleep, some people can experience hallucinations and delirium.
But one man claims that sleeping less might actually be better for him.
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Daisuke Hori from Japan says that he has slept only 30 minutes a day for the past 12 years and it's helped him ‘double his life’ and improve his work efficiency.
A Japanese television team followed the entrepreneur and bodybuilder for three days to follow his daily routine and sleep pattern.
Despite only catching 30 minutes of sleep, Hori woke up each day full of energy.
According to the 40-year-old, he has trained his mind and body to handle minimal sleep without feeling tired and functioning normally.
As a result, the shorter sleep duration has allowed him to make the most of his waking hours.
'As long as you do sports or drink coffee an hour before eating, you can stave off drowsiness,' he said in the show.
'People who need sustained focus in their work benefit more from high-quality sleep than long sleep.'
He backed up his claims by referring to firefighters and doctors, saying that these individuals are highly focused despite shorter periods of rest.
He made the decision when he realised that 16 hours a day wasn't enough time to do the things he wanted to do. So, he started researching and practising shorter sleep durations.
Similar to biohacker Bryan Johnson, Hori teaches others who are interested in adopting his lifestyle.
In 2016, he founded the Japan Short Sleepers Training Association where he offers classes on how to shorten sleep.
His month-long course costs ¥55,000 or around $490 per person.
According to Hori, he has taught more than 2,100 students to become 'ultra-short sleepers.'
One woman who followed Hori's teachings claimed she was able to cut down her sleep to just 90 minutes per day for four years.
She said she kept her mental health in good condition throughout.
Commenting on Hori's YouTube video, some people have praised him for his unique lifestyle, saying he is 'a true master of time management.'
Whilst others are more sceptical and believe those believing that less sleep doesn't impact performance are 'probably just too sleep-deprived to notice,' as another YouTube viewer replied.
