National Fitness Day is a fitness festival approved by the State Council, China, and has been held on August 8th every year since 2009. It aims to encourage all citizens to take part in physical exercise, improve people's physique and health, and also to commemorate the success of the 2008 Beijing Olympic Games.

National Fitness Day is not just a single day, but a sports publicity week, which starts from August 8th every year and lasts for one week, that is, from August 8th to August 15.