Do You Know How a Sparrow Measures a Thing

Do you know how a sparrow does this? How to measure?

Photo by Cassidy Dickens on Unsplash

Did you know that the length from your lower arm (from wrist to your antecubital space/opposite side of the elbow) is about your shoe size?

When I walked around too much before getting into a shopping mall or inside of a shopping mall, I sometimes feel my feet are sweaty. Then…