Walking is often described as a "perfect exercise," because it moves muscles and joints
ways they're supposed to move, it's low-impact, and accessible to virtually everyone.
It's usually not done with intensity to qualify as a workout.
Hypothetical situation - you˙re limited to one mode of exercise to maintain a degree of
fitness with. You should choose either walking, or swimming. Swimming for the same
reasons as listed above for walking.
Full story:
https://expressyourexperience.quora.com/Is-walking-the-best-workout
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