Body temperature, whether you’re sick or well, just
gets higher later in the day. But the explanation behind that answer has to do with all sorts of things.
Three factors regulate your body temperature:
A small gland at the base of the brain called the hypothalamus
Your body’s vital functions (such as your muscle activity and heart rate)
The temperature of your surroundings. Temperature usually follows a built-in 24-hour cycle. Its lowest point is between 3 and 6 a. M. Followed by a peak between 4 and 11 p. M.
Two major factors regulate this cycle:
Your hypothalamus has its own 24-hour hormone-secretion pattern. We don’t know the reason for this so-called circadian rhythm, but to some extent the day/night light cycle helps regulate it.
The things the body does during the day (heartbeat, muscle movements, breathing) involve a release of heat energy, causing your core body temperature to warm up as the day progresses.
This explains why your temperature increases toward the end of the day under normal conditions.
If he is active and playful and temperature is not associated with runny nose, cough
, tired or ill look you need not give medicine.