Answer:
Explanation:
The chemical imbalance theory is unproven and often cited as an explanation for mental health conditions. It states that these conditions are caused by an imbalance of neurotransmitters between nerve cells in the brain. For example, depression is said to be a result of having too little serotonin in the brain.
Biomechanics is an area of study
wherein knowledge and methods of mechanics are applied to the structure and
function of the living human system. Period is a biomechanical term that refers
to the amount of time required for an object to complete single cycle of motion.