In the stomach, food tends to hang around for a little longer and this depends on a variety of factors including the amount of food you have consumed, how much fat it contains, and also the acidity of the stomach. However, all food should have left the stomach within 2 to 4 hours.
Many factors can affect body temperature. Illness, Disease and Trauma. Fever can be caused by infection or illness; this is the bodyâs way of fighting the infection. Certain diseases, such as arthritis, hyperthyroidism and leukemia may also cause elevated body temperature.
Your body under normal conditions regulates the amount of heat produced to keep a stable body temperature of 37 degrees Celsius or 98 degrees Fahrenheit. The body produces heat mainly through metabolic processes as your body breaks down the food you eat and converts it into energy.