Using Apple fitness on MacBook

We can't answer why questions here. This is a user to user only forum and no one from Apple is here or will respond. Suffice to say, Apple has not made an interface for Fitness+ on MacBook. This could be because a MacBook is not exactly a device one might carry to the gym or on a run or swim outdoors. But that's a guess on my part.

Here is a link which tells you the devices Fitness+ is compatible with --> Devices you can use with Apple Fitness+ - Apple Support

If you want to share your thoughts with Apple about this, feel free to use this link --> Product Feedback - Apple

Telling us gets you nothing on this user to user only forum.

Share your thoughts with Apple so they'll actually see them --> https://www.apple.com/feedback/

You might want to provide two - one for Apple Watch and one for Mac.

You will need to give examples and try to re-word the last sentence.

If you watched the WWDC keynote:

1. They announced iphone Widgets will be viewable on MacOS Sonoma.
2. There is a Fitness Widget on iphone

¯\_(ツ)_/¯