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.
Cold temperatures demand that your heart rate increases. Temperatures below 40 degrees hasten the loss of body heat. Shivering is a well-known response, but a less obvious reaction is heart rate increase. In cold weather, a faster heartbeat benefits muscular and respiratory function but in an unfit individual can also increase the risk of heart failure, according to Peak Performance.