Your mother always told you to sit up straight, and now scientists are saying the same thing — they just don’t mean at the table.

For hundreds of thousands of years humans didn’t poop on toilets, sleep on mattresses or sit on chairs.

Posture specialist Esther Gokhale did a cross-cultural study to find out why chronic back pain was so common in some cultures and non-existent in others.

Watch the video to find out more. The findings make a lot of sense!