There are receptors to these molecules in your immune system, in your gut and in your heart. So when you say, 'I have a gut feeling' or 'my heart is sad' or 'I am bursting with joy,' you're not speaking metaphorically. You're speaking literally.
Deepak ChopraEvery action generates a force of energy that returns to us in like kind... what we sow is what we reap. And when we choose actions that bring happiness and success to others, the fruit of our karma is happiness and success.
Deepak Chopra