…Your heart is not just pumping blood and nutrients. Your heart is pumping peace and truth and love and joy. That is how you feel invigorated and you have asked me this in various ways.
“When I am in bliss I just want to lie on the bed and float” but when you start the flow into your bloodstream of the peace and the bliss and the joy and the truth, you will be wanting to climb mountains. That is what your physical heart is intended for.
So, love your heart. Love your physical heart the same way you would love your other organs; your skin, your hair, your breath. Your breath is as much a part of you as anything.
Source: Archangel Michael on the Heart