To perform cyclic breathing, the player takes a deep breath into their lungs and then closes off the back of their throat with their tongue. This traps air in the lungs, allowing them to continue breathing in through their nose while simultaneously pushing air out of their mouth through the didgeridoo. As they exhale, they relax the back of their throat and allow air to flow back into their lungs, and the cycle begins again.
This technique allows didgeridoo players to produce long, continuous sounds without having to stop and breathe. It also enables them to create a variety of different sounds and rhythms by varying the speed and intensity of their breathing.