每天走一萬步有助於避免老年癡呆。。。(about 5 miles)
https://www.yahoo.com/lifestyle/walking-9-800-steps-per-140749315.html
Individuals who lace up their sneakers and walk for 9,800 steps per day are half as likely to develop dementia as their inactive peers. Even walking just 3,800 steps each day (about 2 miles) can decrease dementia risk by 25%.
這個沒寫清楚,這裏麵重要的是長度呢,還是時間。。如果跑同樣距離,時間短了,是否收到同樣效果。