The pranamaya kosha is the energy body.
The vibrancy of this energy body determines your extent of influence and transformative power in the world.
A hyper-vibrant body is unmistakable.
We call it different words like charisma, confidence, happy vibes, and power.
Happiness itself actually is a condition of a highly vibrant exhuberant harmonic energy state.
Harmony is a very important variable.
Without harmony/balance, the high intensity of that person, may appear threatening,
And you may instead stay away from them as much as possible.
Some people are very vibrant inside.
But because of:
1. Hyper restrictive childhood environments,
2. Very low reception from others in formative years,
3. Very hostile and critical parents creating mountains of shame,
All of the activity is sealed and very little gets out.
You mostly see them staying invisible with a poker face.
There are very strong suppressive/repressive mechanisms containing all expressions in them.
This also however can be picked up by others.
Even if you are just silent, someone who wants to mess with you will stay away,
Because he/she senses your prana power that you are bottling inside.
The prana exerts the attractive force by its own nature,
But what form it takes depends on the structure it is channeled through.
For instance there are many different forms of high prana personalities.
It could take different flavors such as:
Power, Anger, Intensity, Calmness/Balance/Equanimity, Movers/Shakers, Celebration/Joy
A very old person has a really feeble pranamaya kosha,
So it is actually quite difficult to even feel their presence.
The opposite of this, is a kid full of exhuberant energy expressing itself,
You just cannot miss the presence of the kid.
Journey to the Abstract 