If the only way you could read an email was to run a mile first, the urge would quickly die. Human beings constantly do subconscious effort/reward calculations. Tapping a screen is the easiest of physical tasks.
![If the only way you could read an email was to run If the only way you could read an email was to run Image](https://www.idlehearts.com/images/if-the-only-way-you-could-read-an-email-was-to-run.jpg?x85372)
If the only way you could read an email was to run a mile first, the urge would quickly die. Human beings constantly do subconscious effort/reward calculations. Tapping a screen is the easiest of physical tasks.