If you are using a fairly strong lamp, especially if it is heating a larger area, such as your lower abdominal area, be very careful.
Because the heat penetrates well, a large volume of tissue is heated up, and the body has to work hard to try to keep all the heated tissue at normal body temperature.
Also, the blood flowing through the area is heated as it passes through the large volume of heated tissue and continues to circulate, carrying the heat with it.
What basically happens is you can get the IR lamp equivalent of sun/heat stroke. If you start to feel a little bit nauseous or faint, turn the lamp off straight away. If it happens, expect to feel a bit ‘rough’ for a while afterwards!
Also as others have said, your penis is not a very temperature sensitive organ - it’s nerves are better at sensations of friction than heat, so you can cook it if you are not careful. :eek2: