My habit is riding treadmill. My riding speed is 8. If I step on treadmill to the rhythm, being feel good. So I like rhythmic music.

Corrections:

My habit is riding treadmill. My riding speed is 8. If I step on treadmill to the rhythm, being feel good. So I like rhythmic music.

My hobby is running on a treadmill. My riding speed is 8. If I step on treadmill to the rhythm, I feel good. I also like the rhythm of the music

Your homework is very descriptive. Good job on this!