Physical exercise is indispensable for a healthy lifestyle. Why exercise? There are so many good reasons for it. Specialists advise that exercising for 30 minutes a day is ideal for good health. This goal is very achievable because simple activities such as stair climbing and brisk walking already serve the purpose. You will find staircase indexes at some MTR stations which aim to encourage people to take the stairs instead of escalators. Based on your physical condition and preference, you can choose which exercises are suitable for you.