Prana Mudra (Mudra of Life):

Method:
Bend ring finger and little finger and touch the tip of thumb with
their tips keeping the remaining two fingers stretched.
Specialty:
As it is the mudra of life, it improves the power of life. Weak
people become strong. It reduces the clamps in blood vessels.
If we practice it regularly, we will become active.
Time Duration:
No specific time duration. One can practice it any time.
Benefits:
It improves immunity
Improves the power of eyes and reduces eye related diseases
It removes the vitamin deficiency and fatigue