The Fourth Paramita, Vīrya literally means "state of a strong human" or "manliness." In Vedic literature, the term is often associated with heroism and virility. In Buddhism, the term more generally refers to a practitioner's "energy" or "exertion", "diligence", "effort". It can be defined as an attitude of gladly engaging in wholesome activities, and it functions to cause one to accomplish wholesome or virtuous actions.

https://www.youtube.com/watch?v=kLifdR6jMmw