爬山是一项很好的有氧运动。据测定,假如以每小时2公里的速度在山坡上攀登30分钟,消耗的能量大约是500千卡,相当于游泳45分钟或在健身房连做50分钟枯燥的练习。因此,爬山受到许多老年人的喜爱。爬山虽好,却也有很多讲究,其耗氧量还是很大的,强度把握不好很容易伤到身体。所以爬 Mountain climbing is a good aerobic exercise. It has been determined that climbing a hillside for 30 minutes at a speed of 2 kilometers an hour consumes about 500 kcal, which is equivalent to a 45 minute swim or a dry exercise in a gym for 50 minutes. Therefore, climbing by many older people’s favorite. Although climbing is good, but there are a lot of stress, the oxygen consumption is still great, the intensity is not easy to grasp the body easily hurt. So climb