The Sanskrit word for energy or exertion is virya. It is the fourth of the six paramitas of the Mahayana path and also shows up in different ways of teaching the Dharma. It is not like the conventional mundane type exertion that accomplishes or controls. So, what is exertion in the context of meditation as a spiritual path?

https://www.youtube.com/watch?v=FS-976KFDEs