Why we should not use pillow?

Online Answer
That's because the majority of your weight is in the middle of your body. It adds stress on your back and neck, making it hard for your spine to maintain its natural curve. Sleeping without a pillow can keep your head flat. This may reduce some stress on your neck and promote better alignment.
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A fresh clove of garlic placed beneath a pillow is believed to bestow a calming effect on the nervous system, thanks to the sulphurous compounds which are released from the garlic. Of course, the garlicky scent may take some getting used to, but it's surely worth it for a good night's sleep!.
That's because the majority of your weight is in the middle of your body. It adds stress on your back and neck, making it hard for your spine to maintain its natural curve. Sleeping without a pillow can keep your head flat. This may reduce some stress on your neck and promote better alignment.
A fresh clove of garlic placed beneath a pillow is believed to bestow a calming effect on the nervous system, thanks to the sulphurous compounds which are released from the garlic. Of course, the garlicky scent may take some getting used to, but it's surely worth it for a good night's sleep!.
If you drop another egg from the same height onto a pillow it wont break (better get a grownup to help with this). ... The egg dropped on the pillow slows down and stops more slowly since the pillow is squishy, therefore the force on the egg is smaller and the egg does not break.