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.
regulation. 1  The act of regulating or the state of being regulated. 2  A principle, rule, or law designed to control or govern conduct. 3  A governmental order having the force of law. Also called executive order 4  . Embryology The capacity of an embryo to continue normal development following injury to or alteration of a structure.