老年人在生活和锻炼中,应注意以下几方面事宜。不宜沿街散步:散步是老年人良好的户外锻炼方式。但不加选择地在街道、公路上散步,对健康无益,反而有害。一则车辆往来如穿梭,很不安全;再者据测定汽车排出的尾气中含有毒物质,如铅、氯、溴、碳等 Elderly people in life and exercise, should pay attention to the following aspects. Not suitable for walking along the street: walking is a good outdoor exercise for the elderly. However, indiscriminate walking in the streets and on the roads is not good for the health but harmful. It is very unsafe for a vehicle to be shuttled. Furthermore, it is determined that the tail gas emitted by a motor vehicle contains toxic substances such as lead, chlorine, bromine, carbon, etc.