Hypothyroid people can compensate for the low cellular energy by increasing the stress hormones (cortisol and adrenaline). The stress hormones keep the body temperature and/or the pulse rate up. Often the stress hormones are high upon waking, which can create high temperature and pulse values in the morning.
If the stress hormones are high, there will be a drop in temperature and/or pulse rate to the hypothyroid level after breakfast, as the stress hormones are allowed to normalize, with the increasing blood sugar. Thus, by measuring the temperature and pulse rate before and after breakfast, it is possibly to separate the effect of the stress hormones from the actual thyroid function.
If some form of thyroid medication is used, this temperature and pulse method is a good way to measure if the right kind and amount of medication is given. You can read more about thyroid replacement therapy in Module 16.
Sometimes the adrenaline is up to 40 times higher in a hypothyroid person compared to a person with good thyroid function, this leads to a very high pulse rate, which can create problems with falling asleep and waking up during the night. The high adrenaline also tends to cause cold hands, feet and nose.