For many years, I was used to getting up late. Then I found a reason for getting up early: during vacations, I wanted to do 5-6 hour bike rides before the tempe

For many years, I was used to getting up late. Then I found a reason for getting up early: during vacations, I wanted to do 5-6 hour bike rides before the temperature reaches 100F in the afternoon. So I started getting up at 6am during vacations. And since I had gotten used to it, I kept up the same schedule year round. It's not that rewarding in the winter when it's dark in the morning. But it's still useful for getting work done early before I start getting interrupted by coworkers.