Vibration & Frequency
All energy healing therapies work on a similar basic principle. We are energy beings and we have an aura or energy field which surrounds and includes our physical body. In a state of dis-ease (illness, stress, worry etc), blocks will form in the aura and the energy flow will slow down. From a schooling point of view, in physics we learn that matter is made up of molecules.
Even something that is solid, such as a table, is vibrating all the time. As humans, we are energy, we too, are vibrating. When you say someone has "good vibes," you are really talking about that person's energy — happy people vibrate on a higher frequency. You can feel their energy. It’s the same with unhappy or angry people, you can instantly feel the dense and low vibe that they are giving off.
Places have vibes too. When you walk into a room in which a fight has just occurred, you may feel a dense energy that makes you want to leave right away. Whereas when you are at the beach you can feel the clear, fresh and renewed energy.