RELATED: Donald Trump: I Have a Winning Temperament â¦ Hillary Clinton Does Not. CNNâs Anderson Cooper took note. âI thought it was interesting, raising the stamina issue when she didnât take a drink of water the entire 90 minutes and I was drinking a couple of bottles of water, as was he,â Cooper marveled afterward.
Sleep disturbances also affect temperatures. Normally, body temperature drops significantly at a person's normal bedtime and throughout the night. Short-term sleep deprivation produces a higher temperature at night than normal, but long-term sleep deprivation appears to reduce temperatures.
As tom said, air temperature is much more variable. Soil holds heat and gives it back at night or later in the year when things are cooler. The farther down in the soil you go, the less temperature variation. The caves around where I am stay at 55 degrees year round, which is our mean temperature for the year.