Transferring Energy

Most people have probably experienced situations in which they've encountered a person with a cheerful, energetic attitude, and felt more cheerful and energetic themselves afterward. In all likelihood, most people also have been in situations where they have encountered a person with a negative attitude, and felt less cheerful themselves as a result of the encounter.

Energy flows from molecules with higher kinetic energy to those with lower kinetic energy. Does energy also flow from one person to the next? Or could it be the power of suggestion? Or imitation? Or something else entirely?

I suspect it is a transfer of energy.