在众多健身运动中,最方便、最经济、最实惠的莫过于走路,而走路时选择凹凸不平的鹅卵石地面效果会更佳。这就是目前不少人每天必做的运动——踩石子。在西安的环城公园及一些公共健身场地,大多有用碎石子铺就的地面,因为石子的错落不 In many fitness exercises, the most convenient, most economical and most affordable than walking, and walking uneven selection of cobblestone ground effect will be better. This is the exercise that many people must do everyday - trample on stones. Most of the ground in the city park in Xi’an and some public fitness areas are paved with gravel, because the gravel is not scattered