There are a few important points to remember when beginning the practice of Uddiyana Bandha: perform it only on an empty stomach, and only after an exhalation, never before an inhalation. (yogajournal.com)
This breath retention work, or the engagement of Uddiyana Bandha, should be done with care. (sonima.com)
Continue to pause briefly after the exhalations and sense a residual internal lift from Uddiyana Bandha. (yogajournal.com)