Scientists say that doubling pre-industrial carbon dioxide levels will likely cause global average surface temperature to rise between 1.5Â° and 4.5Â° Celsius (2.7Â° to 8.1Â° Fahrenheit) compared to pre-industrial temperatures.
Furthermore, they may experience withdrawal symptoms that can include headaches and irritability, perceived loss of performance both physically and mentally. People suffering with intolerance to caffeine have reported feelings of disorientation, loss of judgment, anxiety, dizziness, agitation and a hyper activeness.
Acute stress reaction symptoms include shortness of breath, anxiety, nervousness, sense of doom and more. Excessive caffeine use can cause irritability, difficulty sleeping, anger, depression, and fatigue. If you suddenly stop drinking caffeine, you get withdrawal symptoms, such as headache, fatigue, and bad mood. People with sleep apnea stop and restart breathing multiple times while sleeping.