Why is PAI calculated over 7 days?

The rolling 7-day window allows you to live your life without having to obsess over exercise, while also encouraging you to be mindful of when you need to get moving. You can see how much PAI you’ve earned on any given day, and during a specific activity session. The science shows that if you have obtained a total score of 100 PAI in total over a 1-week cycle, you have been active enough to ensure you maintain optimal health, reducing your risk of cardiovascular disease.