Which activities make you lose track of time?

Activities that often make people lose track of time include:

1. Engaging in a favourite hobby, like playing music or painting.
2. Playing video games.
3. Reading a captivating book.
4. Watching movies or binge-watching TV shows.
5. Spending time with friends or loved ones.
6. Working on a passion project.
7. Exercising or participating in sports.
8. Exploring nature or going on a hike.
9. Browsing the internet or social media.
10. Learning something new or studying an interesting subject.

What activities make you lose track of time?