Humans are mammals, and like other animals, we are born with systems in our bodies that function to keep us alive. For example, when we are confronted with a physical attack, our nervous systems spring into action so we can fight back or run away, often before we even time to assess the attacker - these survival systems trigger automatically, we don't have to think about it.
We need our hard-wired emotional circuits of anger, seeking, fear, lust, maternal care, grief, and play to survive and thrive. However, when we are stressed without relief, especially in our early developmental years, these circuits can get dysregulated. They are supposed to turn on when we need them, so we can run away from threat, for example, and then turn off once we are safe. For people with dysregulated circuits, their survival responses turn on and stay on, creating the type of chronic activation, stress, and exhaustion that leads to physical and emotional suffering.
People who live with this over-activation often identify as highly sensitive, which means their central nervous systems are more sensitive to the environment than most other people's. They are more sensitive to noise, lights, and proximity/personal space. They notice details in their surroundings that others do not notice because they are hypervigilant and scan the environment for threats, not even consciously. They can feel their emotions very deeply, or sense and feel other people's emotions and feel very impacted by them. They absorb the energy in their surroundings - sometimes going to loud or "buzzing" venues can exhaust them more quickly than others.
Resetting the emotional circuits is a form of therapy related to EMDR resourcing: we do it without accessing your unpleasant experiences or triggering overwhelm. It is a neutral and sometimes even pleasant process that takes approximately 5-6, one-hour sessions. However, due to individual differences, some systems can be more challenging to reset and can take longer.
Once the emotional systems are reset, it can be a good jumping-off point to start the preverbal EMDR protocol, which is depth-work psychotherapy that accesses and reprocesses our implicit memories and patterning in the nervous system that developed prior to our developing language, during the periods of conception to approximately age three. This process further helps our bodies be able to detect our present safety and ease into daily life in a "relaxed and ready" state, instead of a hypervigilant, stressed state.