A cortisol blood test is conducted to discover the cortisol hormone level in the blood. Cortisol assists the body in metabolic process stress management. The levels of cortisol inside the blood are vastly different as a result of several factors like stress, infection, injury and strenuous activities. The levels of cortisol usually vary in the length of your day. In the morning, it's generally increased, and at night and during sleep, its level is often low. Its level, however, may follow the person's sleeping habits. Those who sleep within the daytime and so are awake during the night, could have reversed cortisol level patterns also. Not just vital for sexual health but overall health as well - you need a strong blood flow! “None of the homeowners featured on the show know they’ve been chosen to receive a home makeover – it’s a surprise, so I can’t say any more about the episode we’re involved in at the moment. You’ll have to tune in and see it for yourself!”