First of all, take a walk after dinner, preferably 800 meters, if the old man can't stand it. About 500 meters, depending on the physical quality of the elderly. For the elderly around 65 years old, the aerobic heart rate is generally controlled at (170-70) ~ (180-70) =100 ~10 beats/minute. It is safer to increase the safety factor of 0.9 for the patients who have just started exercise intervention. At the beginning, the bull's-eye rate should be controlled at (170-70) × 0.9 ~ (180-70) × 0.9 = 90 ~ 99 beats/min. It is worth noting that the determination of the bull's-eye rate should also be used flexibly according to the specific situation. The health status, environment, season and mood in different periods will have a certain impact on the choice of exercise. . . I don't know if it will help you.