Your bike is a mobile fitness machine. It's fun and fast.
You can use your bike for many things, such as exploring, hanging out with friends, and fitness.
The best way to use your bike for fitness is by cycling in a HIIT (High Intensity Interval Training) exercise manner. It's basically tabata but on your bike.
You will need to...
Start by pedaling with as much speed and pressure as you can for 20 seconds.
Pedal normally or slowly for 10 seconds
Do this procedure for as many rounds as you want!
This will help build strength in your legs so you can go faster without feeling sore or having your legs "burnt".