Yes, walking can be a great form of exercise for an adult human. Some key benefits of walking include:

It is low impact so it is easy on the joints. This makes it accessible for people of many ages and fitness levels.
It can be done anywhere at any time for no cost. You do not need any special equipment or facilities to go for a walk.
It provides both physical and mental benefits like improved cardiovascular health, stronger muscles and bones, and improved mood.
The intensity can be easily adjusted to suit one's needs. You can go for a leisurely stroll or a more brisk power walk.
So overall, walking is a simple but effective form of exercise that most adult humans can benefit from.
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