Everything in this universe vibrates. Every place. Every thing. Every One. Has a vibration. If you pay attention you can awaken a certain kind of sensing or sensitivity to the vibrations of things both physical and non-physical (like thoughts and emotions).
Each person also carries a unique “vibe”. You can especially feel it when you embrace.
Vibrations also seem to attract and repulse.
Becoming sensitive to your own internal vibrations is critical to mastering what you attract or repel in your life. We can learn to consciously control and raise our own internal vibrations through awareness. In this practice we can heal ourselves, our lives, and thus the world.