Everyone can afford a simple thermometer. Track your temperature when you first awaken in the morning, before even getting out of bed. This reflects your core body temperature, when it is not being influenced by what you just ate, drank, or your activity level. Many of you will likely be surprised to see just how cold you already are. The healthy body has daily temperature fluctuations (diurnal) with the coolest temperature upon awakening in the morning hours of 6-8 a.m. and the warmest being in the evening between 8-10 p.m