Understanding Electrical Signals in the Body
The human body operates using a complex system of electrical signals that facilitate communication between cells, particularly in the nervous system. Despite the presence of these electrical signals, we do not experience pain or harm under normal conditions due to several protective mechanisms.

Electrical Signals and the Nervous System
- The body uses electrical impulses to transmit information quickly.
- Neurons generate these impulses through the movement of ions across their membranes.
- Signals travel along axons and are transmitted to other neurons or muscles.

Why We Don't Get Hurt
- Low Voltage: The electrical signals in our body are of very low voltage (millivolts), insufficient to cause harm.
- Myelin Sheath: Many neurons are insulated with a myelin sheath, which protects them from damage and ensures efficient signal transmission.
- Specialized Cells: The body has specialized cells (like Schwann cells) that aid in repairing and protecting nerve cells.
- Threshold Activation: Pain receptors (nociceptors) only activate under specific conditions, such as extreme stimuli, ensuring that normal electrical activity doesn't cause pain.

Conclusion
In summary, while our body relies heavily on electrical signals for communication, various protective mechanisms ensure that these signals do not cause harm. The low voltage, insulation, specialized cells, and threshold activation of pain receptors all contribute to our safety, allowing us to function without discomfort.