A hobby is an activity that we enjoy doing in our free time.Hobbys distract us from work and can relax our brain and body.To enjoy this process,some of us believe that hobbies should be hard-to-do.I completely disagree with this idea.In my opinion,it is not necessary to do extreme activities,since it is harmful to health and there are other free time activities that are more enjoyable.In the forthcoming paragraphs,I shall expound my thoughts in detail.