Brainwaves are the rhythms your brain creates as you process the world around you.  Each one, Delta, Theta, Alpha, Beta and Gamma is essential to activating neurotransmitters that influence how you think and feel. 

Slower brain waves, like delta, aid us for better sleep and relaxation. 

Beta and gamma brainwaves which are faster, enhance our focus and learning, 

When your brain is optimized,  it produces a harmonic flow between all brainwaves. 

Stress will disrupt the harmony and destabilize our emotions which directly impacts our physical health.