调整办公座椅健康的椅子，让你坐上去，脚底触地时膝盖恰好呈90度。膝盖下方的小腿要往前伸五六厘米，如果双腿长时间往内收，会造成血液循环不顺畅。为避免背部承受太大压力，不要坐得笔直，身体稍微往后靠，使脊骨自然弯曲，腰背部有椅背相靠可减少酸痛。不要坐着取物常需要 Adjust the office chair healthy chair, let you sit up, knees exactly 90 degrees when the foot touch the ground. Knees below the leg to extend forward fifty-six centimeters, if the legs inward adduction, will result in blood circulation is not smooth. To avoid excessive pressure on the back, do not sit straight, the body slightly back by the natural curvature of the spine, back and back with a backrest to reduce pain. Do not sit and take things often needed