Surprisingly, coffee does not help you deal with stress effectively. In fact, caffeine intake increases the production of stress hormones called Cortisol. When the body produces too much of these negative adrenal hormones, it causes irritability, muscular fatigue, anxiety, insomnia, and indigestion among many other things leading to sickness. People normally drink coffee to keep the adrenaline at an optimum level and help them stay awake. In reality, it only alters the body clock which is detrimental to one’s health.