One of the 3 powerful muscular locks (bandhas) that yogis practice.
While it has a long list of benefits, it is recommended that you practice Uddiyana bandha under the guidance of a knowledgable instructor. Ideally Jalandhar bandha should be mastered first before practicing this bandha.
Benefits:
massages all the organs in the abdominal area
regulates the functioning of the adrenal gland
improves the functions of liver and kidneys
improves and supports digestion
detoxifies and purifies the digestive tract
Contraindications:
avoid if you have blood pressure problems
not to be practiced during pregnancy
not to be practiced soon after meals