The #10yearchallenge has taken up the internet by storm with many celebrities posting their latest pictures and how they looked a decade back.

This challenge has also garnered a lot of curiosity and enthusiasm, among people on how ‘looks’ would change every decade. Though there is no strong evidence, few medical practitioners believe that human body undergoes a lot of changes every 7 years but not 10.

However, changes in the body is a constant process with cells generating and degenerating in every part of the body, doing their job of fighting infections, providing nutrition, pumping in energy, regulating body functions all from within.

If you thought, your outwardly appearance defines inner health, think again. Look at the following to learn how cells in each body part change daily, sometimes even hourly, contributing a lot to your looks!