Fatigue may be related to: 1  Use of alcohol or drugs. 2  Excess physical activity. 3  Jet lag.  Lack of physical 1  activity. Lack of sleep.  Medications, such as antihistamines, cough 1  medicines. Unhealthy eating habits.
Difference between a Regulation, Directive and Decision. Regulations have binding legal force throughout every Member State and enter into force on a set date in all the Member States.
What is the difference between Rules and Standards? â¢ Rules are guidelines that are meant to guide the actions, behaviors, and conducts of people working in a particular situation or environment. â¢ Standards are written documents that are meant to maintain high quality and consistency of materials and products though they are also applicable to learning and other abstract concepts.