For example, some ingredients may be safe in products such as cleansers that we wash off the skin immediately, but not in products that we leave on the skin for hours. Similarly, ingredients that are safe for use on the hair or nails may be unsafe when used on the skin or near the eyes.
Carbohydrates are the main energy source for the brain. Without carbohydrates, the body could not function properly. Sources include fruits, breads and grains, starchy vegetables and sugars. Make at least half of the grains you consume whole grains.
Glucose, a simple sugar, is the body's primary source of energy. Cells in the body can quickly and efficiently convert glucose to adenosine triphosphate, or ATP -- the energy currency that enables all bodily functions to occur.