Mudra is muscular motion,
Meaning of Mudra:
The human body is comprised of 5 incredible elements(Pancha Bhoota or Pancha Maha-Bhoota).
These components are
Earth (Prithvi)
Water (Jal)
Fire (agni)
Air (vayu)
Aether (Aakash)
Human hand addresses entire body , so each finger addresses 5 incredible components
🤘✌️🤞🤙🤌🤟☝️
While doing pranayama or unwinding, sitting in the stance with Mudra will improve the energy in the body and make the mindfulness with body and brain.