Seems like common sense, no?
A method nicknamed “Japanese walking” on social media — also known as interval walking training, or I.W.T. — seems to offer greater advantages than a simple stroll, or even than walking at a moderate pace for 8,000 or more steps a day.
The strategy was first introduced two decades ago in a study led by Hiroshi Nose, an exercise physiologist at Shinshu University Graduate School of Medicine in Japan....
In the studies by Drs. Nose and Masuki, subjects typically walked quickly for three minutes and then slowly for three minutes. During fast periods, the idea is to feel as if you’re working somewhat hard, to the point that you would have a hard time carrying on a conversation. The movement during the slow periods should be a gentle stroll.