Unfortunately, after returning from Japan, I caught a cold. The cause was probably the fatigue caused by jet lag. Jet leg is really stressful on the body because of rapid changes that are required in the body’s natural sleeping and eating cycles. This abnormal stress reduces the performance of the body’s immune system which makes the body more susceptible to illness. The first symptom that indicated something was wrong was a sore throat. Then, my nose began to run and my sinuses became congested. Finally, I just felt really tired. After about five days my condition began to improve. Although not fully healed yet, I now feel much better and life is gradually returning to normal.