We know of course theoretically that all things are moving, albeit some very slowly. We often forget that even visible light is a frequency, a vibration. Each colour can be separated out by its separate frequency.
We also know, thanks to Kirlian photography, that we can photography the energy which emanates from our own bodies. That we have energy around our bodies is a fact. It has long been contended that that energy or aura, around the body has colours. Whether or not this can be photographed exactly, I do not know, however, that it is plausible is definite. Why would different people have different colours to their energy? It would seem that it would have to do with the frequency on which that energy most often was sent out.
The higher frequencies have more intricate patterns to them. They are more complex. The lower frequencies are more simple and there is a definite progression as the frequency increases. We often speak about emotions, the darker ones - depression, sadness, melancholy, as being heavy. We know how we feel 'light-hearted' when we are happy. Are these not also examples of different frequencies? If so would not illness, where the body feels weighted and heavy, be an example of a lower frequency? We talk about good health as being 'vibrant'. Keeping ourselves cognizant of our words and emotions - both of which we have control over may be key to our own health and happiness. Watch the two videos below and challenge your paradigm: