You lose most of your body heat through your head. A military study many years ago tested the loss of temperature in soldiers when exposed to very cold temperatures. They found rapid heat loss in the head. The results did not mention that they were fully clothed except for their heads. Without clothes on you lose about 10% of your body heat through your head.
You should drink at least eight glasses of water a day. In 1945 a government agency said that the human body required about 8 glasses of fluid a day. That includes fluid from all foods and drinks. Over time fluid was converted to water and hence the myth. However, water is filling and having a glass before meals does cut down on food consumption.
Eating turkey makes you sleepy because it contains tryptophan. Chicken and ground beef contain about the same amount of tryptophan as turkey does, while pork and cheese actually contain more. Turkey gets the bad rap because it is usually consumed during holidays with much other food and drink. Large heavy meals slow blood flow which can cause drowsiness.
Eating at night makes you fat. This one is just simple math. It doesn’t matter what time of day you eat. As long as you eat only the total calories that you burn each day, you will not gain weight. If you eat fewer calories than you burn, you will lose weight, and if you eat more calories, you will gain.