There are two kinds of Energy:
Bodily and Mental!
There are two kinds of the Energy Ability (Viriyindriya):
1. Bodily Energy (Kāyika-viriya)
2. Mental Energy (Cetasika-viriya)
There are two degrees of the Energy Ability:
1: Ordinary Energy (Pakati-viriya)
and 2. Energy developed by meditation (Bhāvanā-viriya)
Bodily Energy is reducing sleep
and being vigorous and energetic in all.
Mental Energy is alert enthusiasm
in keen attention to whatever object.
Any kind of work will only reach
success if gaining mastery over it...
If done without real energy the work gains mastery over the person
and no concrete results appear,
days and months drag along and strong
disgust with the work appears, leading to laziness.
When being lazy
the progress of the work slows down, and the fake idea appears that
would be better to change work or give it up altogether...
In meditative work, quick success is obtained only by one endowed
both bodily and mental energy.
Only Energy developed by meditation
completely overcome sloth and laziness. The mind then takes
delight in dwelling fixed on the objects on which its attention is strong!
This is the Energy Ability
developed by meditation...
requisites of Enlightenment. Ven. Ledi Sayādaw. Wheel
full Study on Energy (Viriya): The root Hero of all Success: