A cortisol blood test is finished to discover the cortisol hormone level inside blood. Cortisol assists our bodies in metabolic process and stress management. The levels of cortisol inside blood can vary because of several factors like stress, infection, injury and strenuous activities. The levels of cortisol usually vary during the length of your day. In the morning, it is generally increased, possibly at night and during sleep, its level can often be low. Its level, however, may stick to the person's sleeping habits. Those who sleep inside daytime and are awake at night, could possibly have reversed cortisol level patterns also. Tongkat Ali is another great herb proven to increase levels of testosterone. Symptoms of arthritis usually develop over time, but may also occur suddenly. Arthritis is most common in adults over the age of 65, but it can also develop in children, adolescents and young adults. Arthritis is more common in women than men and overweight people. Rheumatic polymyalgia - a condition that almost always affects people over 50 years of age, in which case the immune system can cause muscle pain and stiffness, often across the shoulders and upper legs. It can also cause joint inflammation.