Hypertension Labile Hypertension 2024-02-11T10:50:49Z It is normal for BP to fluctuate from moment to moment and from day to day. BP fluctuation is related to many factors such as physical activity, emotion, position, respiratory cycle, diet, salt intake, alcohol ingestion, sleep deprivation, and others. Even in otherwise normotensive individuals, BP fluctuation can be substantial during moments of physical or emotional stress or even without overt provocation. Frequent fluctuations of blood pressure between normal and high levels, changing more dramatically than normal.