Optimal doses of barley as a food or supplement have not been established for any condition. However, to try to lower cholesterol, people have used one of these daily doses: 1  3 grams of barley oil extract. 2  30 grams of barley bran flour.
Still, the very best way to raise your body temperature is to go for a light jog - just get your heart pumping. Jogging/running is one of the easiest ways to get your heart pumping in a short amount of time and works throughout your whole body (as opposed to the heat pad).
an elevation of body temperature above the normal circadian range as a result of an increase in the body's core temperature. Fever is a temperature above 37.2Â° C (98.9Â° F) in the morning or above 37.7Â° C (99.9Â° F) in the evening. Fever results from an imbalance between the elimination and the production of heat. Exercise, anxiety, and dehydration may increase the temperature of healthy people.