hobbies are activities you enjoy to help you relax or for pleasure; you can use your hobbies to your benefits (for example, making a quilt and submitting it to the craft fair, receiving a reward, and to your choosing sell it for profit).
Hobbies are like what you personally like to do for fun. For example, maybe you like to ice skate as a hobby or read. Your question would sound more correct if said like this, “what are hobbies?” or “what is a hobby?”. Anyway, they’re just what you personally like to do as a way of entertainment.
