b"Chapter 10 atnight,asnoringpartner,oranuncomfortablesleeping environment like a stuffy bedroom.Alcohol and drugs: alcohol is a depressant that slows down the nervous system and disrupts normal sleep patterns. Other drugs, such as cigarettes and caffeine, stimulate the nervous system and can cause insomnia.Lack of regular exercise and sedentary behavior: physical activity is known to improve fitness, health, and well-being, reduce stress and increase energy levels. It also helps you sleep.Bad nutrition: low-kilojoule diets, low-carb diets, or energy-dense foodsthatarenutritionallypoordonotprovidethebodywith enough fuel or nutrients to function at its best. Quick-fixfoods,suchaschocolatebarsorcaffeinated beverages, only provide a temporary energy boost that quickly wears off and worsens fatigue.Individualfactors:illness,personalsituationsortoomany obligations. For example, working two jobs or financial problems can cause fatigue.d.Workrelated:Commonworkplaceissuesthatcancausefatigue include.Shift work: the human body is designed to sleep at night. This patternisdefinedbyasmallpartofthebrainknownasthe circadian clock. A shift worker disrupts his circadian clock by working when his body is programmed to sleep.Poor Workplace Practices: they can increase a person's level of fatigue. The most commonly observed are long working hours, heavy physical labor, irregular work schedules such as rotating shifts, a stressful work environment such as excessive noise or extreme temperatures, boredom, working alone with little or no interaction with others or a fixed focus on a repetitive task.Workplace stress: it can be caused by a wide range of factors, includingjobdissatisfaction,heavyworkload,conflictswith bosses or co-workers, bullying, constant change, or threats to job security. 310Germain Decelles"