GABA   is the chief inhibitory neurotransmitter in the mammalian central nervous system. It plays a role in regulating neuronal excitability throughout the nervous system. In humans, GABA is also directly responsible for the regulation of muscle tone. When the level of GABA in the brain decreases below a certain level seizures and other neurological disorders may occur. GABA can act as a natural calming and anti-epileptic agent in the brain, also increases levels of HGH, which is desirable to most adults since this hormone allows children and teenagers to grow and gain weight increase muscle mass without putting on extra pounds.   
 

1.Gamma-aminobutyric acid (GABA) is major neurotransmitter widely distributed throughout the central nervous system (CNS).

2.This neurotransmitter appears to have a significant influence on the pituitary gland's  secretion, primarily through its hypothalamic effect.

3.GABA is also the most important and widespread inhibitory neurotransmitter in the brain.

4.It helps prevent the over-firing of the nerve cells and decreases overall neuron activities in the CNS. Over-firing can cause restlessness, spasmodic movements, irritability and anxiety.

5.GABA is also utilized by the brain to create tranquility and calmness through the brain's metabolic processes.