Neti can be practiced either by sitting or standing comfortably. One has to slightly bend forward especially for Jala Neti.
Lukewarm water with some salt in order to make it slightly hypertonic is taken in a Jala Neti pot.
The nozzle of the Neti pot is put in one of the nostrils and the head is gradually tilted to the opposite side till due to gravitational force, water from the Neti pot starts flowing through the upper nostril and comes out through the lower nostril.
If the head is slightly tilted forward, no water comes in the mouth.
Breathing is continued through the mouth during the practice. The same process is repeated in another nostril.