And the The and wind.

Technological advances have allowed us to harness these sources, giving us wonders like computers and

vibrating smartphones.

The energy created by chemicals is due to the reactions of the atoms and molecules present.

All of the elements we take in our bodies like oxygen, sodium, potassium and calcium have a specific

electrical charge, meaning they have a specific number of electrons, protons and neutrons.

Those specific charges, whether positive or negative, react to the charges of adjacent molecules.

This reaction is what creates the energy needed to create electricity.

When we eat or drink the large molecules within our food get broken down by digestion creating

similar molecules.

Those smaller molecules can be used by our cells to do work.

This process is called cellular respiration. All of those molecules

and elements in our bodies have the potential to create electrical impulses.

Arguably the most commonly mentioned electrical current within our bodies is the heart rhythm.

Hearts contain within

them a grouping of cells known as your sinoatrial node or S A node. These cells

within the S A node, sometimes called the pacemaker of the heart, contain electrolytes both inside and outside of the cells.

The most common electrolytes within the body are sodium, potassium, calcium, magnesium, phosphorus, and chloride.

sodium and calcium generally reside outside of the S.A. Node cells. chloride. Pressure within the bloodstream allows sodium to enter the cell causing potassium to leave it.

Less potassium leaves the cell than sodium entering it.

The result is a continually growing positive charge.

When the charge reaches a certain point, calcium channels in the cell membrane open up and allow

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