There is a wide range of segmented breaths used in Kundalini Yoga kriyas. A segmented breath is defined by the inhalation and exhalation being divided into sections, in specific ratios. Each ratio gives a different effect.
Some typical ratios for inhale, hold, exhale, hold are as follows:
As an example, examine the 4:0:1:0 ratio. This breath is used to heal oneself and to break depressions. You break the inhale into four equal sections. Each part is a quick, sniff-like inhale. Exhale in a single long stroke through the nose. It is important to focus on the flow of the breath and to keep the broken breath equally divided.