Nasal discharge from a cold generally starts out clear and watery and can become more cloudy and thicker and finally turn green or yellow at the end of the cold. Acne is caused by not washing your face. Acne is not related to dirt on the skin or greasy foods. It is caused by inflammation under the skin, not dirt on the skin's surface. Keeping the face clean is always good, but scrubbing could make acne worse.
Vitamins can provide extra energy and stimulate appetite.
Vitamins do not contain calories, so they can't supply energy. Unless your child has a vitamin deficiency, his or her energy level or appetite will not be affected by vitamin supplements. Cracking knuckles and other joints will cause arthritis. There is no evidence that cracking joints will impair joint development or lead to arthritis. Heat helps wounds heal.