As people strive to keep themselves free of the coronavirus, it may be surprising to find out that humans actually breathe in tens of thousands of micro-organisms a day.

A robust immune system is vital to long-term good health. Should one catch a bug, one would display milder symptoms and recover faster.

Please or to continue reading the full article. Learn more about ST PREMIUM.

Enjoy unlimited access to ST’s best work

  • Exclusive stories and features on multiple devices
  • In-depth analyses and opinion pieces
  • ePaper and award-winning multimedia content


READ  John Travolta posts rare photo of son in pilot's seat


Please enter your comment!
Please enter your name here