Newton's First law of motion is: An object at rest remains at rest unless acted upon by a force. An object in motion remains in motion, and at a constant velocity, unless acted upon by a force. Inertia is the resistance of any physical object to a change in its state of motion or rest, or the tendency of an object to resist any change in its motion. In other words, I have been enjoying a wonderful laziness this past couple of weeks. I go to work, come home, sleep ... rinse, repeat. A body at rest. It's good for the soul.
Sometimes a body in motion will defy Newton's first law of motion, and to that end I invite you to watch this wonderful video. It's not about the children, it's about the seal. The video is not very long, but you have to watch it to the end. I once did a blog post about whether or not animals were sentient beings. This video will leave you no doubt whatsoever.