I do this almost everyday at school because we don't have an elevator even though we have four floors in total. I always make sure to walk on my way to school as well just to burn some fats. Although it's a bit tiring to walk on the way and the climb the stairs until the third floor. But, I don't care about being tired anymore because of the benefits I can get. Also, we have long stairs at home and it kind of helps me to burn fats as well because I always go up and down almost 20-30 times a day.