Over the past two years, you've likely taken a Covid rapid antigen test. A unique, biochemical reaction involving saline, tiny particles of gold, and paper with antibodies, is helping to give us quick and relatively accurate results. Dr. Kate Biberdorf, a chemist and author, explains the chemical process of the at-home tests (while taking one!) to explain exactly how it works. | WIRED

138K views · 975 reactions | Respirologist Dr. Samir Gupta and host Heather Hiscox demonstrate how to take a rapid COVID-19 antigen test and discuss when it's appropriate to take one. | CBC News | Facebook

Reaction time games test your speed and hand eye co-ordination. 💪🏈😂😅😆 Here's how the game works. You'll need a referee and two players, so 3 participants overall; but the participants can go up to 10 people. Between two players, there's a rugby ball, note that this can be changed to any other item to suit your situation. For example: You can use can drinks, water bottles or other items, get creative with it. The referee will be in charge of the commands, for example, touch your knees, shoul