Think you know everything about staying healthy? Think again!

Most people are surprised by how little they actually know about everyday health habits — from how much water to drink, to how long you should brush your teeth, to what really happens to your body when you exercise.

We collected 10 of the most surprising and eye-opening health facts and turned them into a fun interactive quiz. Each question comes with a 15 second timer and a detailed explanation after every answer — so you will actually learn something new every time you play!

Whether you are a fitness fanatic or just starting your health journey this quiz will test your knowledge and maybe even change some of your daily habits.

How many will you get right? Start the quiz and find out!