I've heard that lack of sleep can make you gain weight. Is that true?

A lack of sleep actually wears down your fine tuned machine known as your body and you sustain physical, mental and emotional wear and tearThis wear and tear affects the body’s insulin resistance (meaning how well insulin and blood glucose work as a team) and increases the chance for metabolic syndrome which affects the metabolic processes in the body. You tend to see metabolic syndrome in a person who carries extra fat around their belly, almost like an inner tube. Along with the apple shape that the body takes on from this extra inner tube, blood pressure, blood sugar and blood cholesterol are usually all elevated. Diabetes tends to be more common also.

Other studies also suggest that too little sleep may play a role in obesity. How? Sleep deprivation seems to alter the hormones involved in appetite control and metabolism which affect how hungry you are and when you feel satisfied.