Was 2013 the year of Pharrell Williams? With chart toppers such as Blurred Lines and Get Lucky, this writing and producing veteran has suddenly become a rising star.
1 Take the Exercise and Fitness Quiz!  AMS (acute mountain sickness): Acute mountain sickness (AMS) is the effect on the body of being in a high altitude environment. AMS is common at high altitudes, that is above 8,000 feet (2,440 meters). Three-quarters of people have mild symptoms of AMS over 10,000 feet (3,048 meters).
The ANS (Autonomic Nervous System) is a group of nerves that connect the major physiological control centres of the brain to practically all the bodyâs tissues and organs. The ANS can be separated into the sympathetic and parasympathetic nervous system. The Sympathetic nervous system is concerned with bodily mobilization and the expenditure of energy. It controls the commonly named âflight or fightâ response; that is, it prepares us for physical action to respond to emergency situations.