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.
Healthy Eating. Several different factors affect metabolism, or how many calories your body burns each day. You may have heard that your core body temperature can increase or decrease your metabolism. This appears to be true -- and outside air temperature may also affect how many calories your body burns daily. High Body Temperatures.