Elements are specific nutrients essential for proper functioning, growth, and recovery of the body. Essential nutrients are proteins, vitamins, carbohydrates, fats, minerals, and water. Ions are micronutrients that support the movement of electrical signals in the body. They adjust the osmotic pressure and sustain the activity of muscle and nerve cells. The essential ions come from sodium, potassium, calcium, magnesium, and chloride. A chemical bond is a force of attraction between atoms. When the bond is bokeh, energy is released. The human body uses energy stored inside bonds in the food to function properly. Digestive enzymes break down food into smaller molecules so the body can absorb it.