Part of what makes it so impressive is its ability to regenerate itself. Your outer layer of skin replaces itself every 35 days and you are given a new liver every six weeks.

At complete rest, the typical adult male exchanges approximately 0.5 L (500 mL; 400 mL for female) of air per breath (tidal volume) at a rate of 12 times per minute, resulting in a minute ventilation rate of about 6 L of air per minute.

The human body achieves both functions of a machine, through contraction of muscles, which are firmly attached to rigid bones, connected by wedged, hinge or ball-in-socket joints and effect or prevent movements about these joints.

Watch The Incredible Human Machine | Prime Video.

Humans are the most sophisticated machine loaded with adaptability, self-repair, and ever-expanding cognitive powers. We are still far from perfect. There are several design flaws at both the physical and psychological levels.

In babies, the skin renews itself every 14 days. In teenagers, this process takes about 28 days. In adults, it takes between 28 and 42 days. In those age 50 and older, the skin renewal process can take up to 84 days.