Alerts & Learnings Personal Exposure Limit Fatigue is a physiological state of reduced mental or physical performance capability, resulting from sleep loss or extended wakefulness, that can impair alertness and ability to safely operate or perform duties. Being Fatigued seriously impairs our vigilance and judgement, especially in critical situations. The end result is a body that will not function unless revitalised by rest or nourishment. Download Learning Moment Rate this Learning Moment Your Rating Average Rating Share: Share on Linkedin Share on Facebook Share on Twitter Share with Email