In one experiment, the researchers investigated the level of physical activity of the subjects and analyzed the average amount of time they spent sitting every day. The results showed that sitting for too long (more than 5 hours) was closely related to the shrinking of the medial temporal lobe of the brain, and even if the body reached a high level of activity at other times, it could not change the trend of shrinking the temporal lobe. 
In all age groups, the effect of sitting for a long time on the memory of the young is greater than that of the middle-aged and the elderly
 sitting for a long time can have an effect on people's memory.