Things to remember. 1  Caffeine is a stimulant drug that acts on the brain and nervous system. 2  Like many other drugs, it is possible to become dependent on caffeine.  Pregnant women, athletes and children should limit their intake of caffeine.
hobby1. 1  an activity or interest pursued for pleasure or relaxation and not as a main occupation: Her hobbies include stamp-collecting and woodcarving. 2  a child's hobbyhorse. 3  Archaic. a small horse. 4  ride a hobby, to concern oneself excessively with a favorite notion or activity. Also, ride a hobbyhorse.
Definition of profession for Students. 1  1 : an occupation (as medicine, law, or teaching) that is not mechanical or agricultural and that requires special education. 2  2 : an act of publicly declaring or claiming a profession of religious faith. 3  3 : the people working in an occupation.