This video shows how the energy and frequencies of individuals distributes freely towards all and creates alignment between them. All it takes is an environment which is not a solid stand-alone entity, and in this sense also does not create seperation between individuals. It is "fluid", and supports alignment of  the individuals. The energy and frequency from the one individual can freely move to the other individual(s) and create synchronicity. 

This is in essence how any form of energetical healing functions.