In this sense, the mind is likened to a pond of water. Restless thoughts are like pebbles thrown into the water. They send out a ripple of activity, disturbing the tranquil surface and we cannot see clearly to the bottom of the pond, which represents our inner wisdom. When we stop the restless thoughts, we calm the waters, enabling us to see clearly to the bottom—where our wisest, most enlightened self resides.
When we exercise, we metabolize excessive stress hormones—restoring our body and mind to a calmer, more relaxed state. Any form of activity where we "work up a sweat" for five minutes will effectively metabolize off—and prevent the excessive buildup of—stress hormones.
Quote: "...if you don't take care of your body, where else are you going to live?"