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).
1 Basal body temperature (BBT) method. 2  Basal body temperature (BBT) is the lowest body temperature a healthy person has during the day. 3  A woman's hormone levels during her menstrual cycle naturally cause her BBT to fall 1 to 2 days before ovulation and then rise 1 to 2 days after ovulation. Basal body temperature (BBT) method. 2  Basal body temperature (BBT) is the lowest body temperature a healthy person has during the day. 3  A woman's hormone levels during her menstrual cycle naturally cause her BBT to fall 1 to 2 days before ovulation and then rise 1 to 2 days after ovulation.