Dr Karl: How you can lose weight JUST by getting more sleep – and why a bad night’s rest can lead to fat gain fast
- Dr Karl has revealed how a good night’s sleep can result in weight loss
- He said when people are tired they are more likely to choose high-energy foods
- He also revealed the hormones which make you feel full switch off when tired
Getting a good night’s sleep could be the secret to effective weight loss, according to a leading scientist.
Dr Karl Kruszelnicki, who has degrees in medicine and biomedical engineering, recently explained the positive effect a good sleep can have on your waistline.
The popular scientist impressed with his video explanation which recently went viral on TikTok.
Dr Karl Kruszelnicki, who has degrees in medicine and biomedical engineering, recently explained the positive effect a good sleep can have on your waistline
‘When you get tired your body works differently,’ he explained.
He said sleep can have an impact on our hormones.
‘Going without sleep simultaneously increases the the actions of one hormone that makes you feel hungry while shutting down the hormone that makes you feel full,’ he said.
This makes you likely to eat more.
The second part of the explanation is related to our brains.
‘Being tired makes the part of your brain that controls impulses stop working properly,’ he said.
This means people become more impulsive when they are tired.
‘Then the amygdala gets pumped up,’ he said highlighting a tiny part of the brain.
‘It drives fun-seeking behaviour so fatty foods get more attractive.’
He explained that not getting enough sleep can cause hormones to change
These hormones help balance your appetite – so when they are not at their proper level your appetite changes
What’s the link between poor-sleep and weight gain?
According to Dr Karl there are two reasons you could put on weight if you aren’t sleeping properly.
Both are ultimately centered around what you eat.
The hormone that makes you feel full stops working while the one that makes you hungry works harder.
This makes you more likely to eat more than you need to when you are tired.
Dr Karl said there is a link between sleep and impulsiveness.
The less sleep you get the more impulsive you become – searching out high-energy food can be a result of this.
People who don’t get enough sleep are more likely to eat foods with higher calorie content.
According to Dr Karl sleep deprived people choose food with 50percent more energy.
This leads to weight gain, because more energy is being consumed.
Hundreds of people commented on the post, some complaining the new information would make getting to sleep harder.
‘Thanks Dr Karl, nothing stops my anxiety from keeping me awake better than knowing I’m gaining weight every second I can’t fall asleep,’ one woman said.
Others drew the conclusion that ‘sleep for dinner’ would be a good idea.
One woman took the opportunity to ask for tips to getting a better sleep.
The second thing being tired impacts, when it comes to weight, is our brain
People become more impulsive when they are tired, according to the scientist
How much sleep should people get each night?
Everyone’s sleep needs are different, according to Healthline. But there are rough guidelines based on different age groups.
4 to 11 months: 12 to 16 hours
1 to 2 years: 11 to 14 hours
3 to 5 years: 10 to 13 hours
6 to 12 years: 9 to 12 hours
13 to 18 years: 8 to 10 hours
18 to 64 years: 7 to 9 hours
65 years and older: 7 to 8 hours
People need to see how they feel after different amounts of sleep to pinpoint how much they should be having.
Signs you are not getting enough sleep
You’re drowsy during the day
You’re more irritable or moody
You’re less productive and focused
Your appetite has increased Source
Your judgement and decision-making isn’t what it usually is
Your skin is affected (dark undereye circles, dull complexion, droopy corners of the mouth
‘I always sleep six-eight hours but I always wake up tired and never rested,’ she said.
Dr Karl didn’t have any straight answers though, and instead told the woman to speak with her GP.
Another person saw themselves in the information provided in the video.
‘I’m tired and have just eaten a pack of Oreos, great,’ she said.
Another woman decided to take the positive from the video’s message.
‘So it is my baby’s fault I can’t lose weight, not these Oreos,’ she laughed.
Dr Karl also said people’s bodies don’t adapt to not having enough sleep, they just get worse.
Dr Karl: How you can lose weight JUST by getting more sleep