According to Baidu question bank, Xiaoming lives on the eighth floor. If the height of each floor is the same, then she has to climb seven floors every day when she comes home. Because Xiao Ming lives on the eighth floor, and the 1 floor is the ground, she needs to climb seven floors to get home.

Climbing stairs is a kind of exercise, which means climbing stairs to achieve the purpose of exercising. Stair climbing is an aerobic exercise, which can exercise people's cardiopulmonary function, enhance muscle strength and improve the coordination and flexibility of the body.