This process starts in the cellsâ cytoplasm and is completed in the mitochondria-the cellular powerhouse. In those tiny organelles, one molecule of glucose with 6 molecules of oxygen are changed into 36 molecules of ATP â the energy cells can use to get things done.
Symptoms of Severe anxiety. The list of signs and symptoms mentioned in various sources for Severe anxiety includes the 4 symptoms listed below: 1  Feeling of extreme uneasiness or apprehension. 2  Increased heart rate. 3  Sweating. 4  Unable to think clearly. 5  more information...Â».
Anxiety produces physical symptoms such as: rapid or irregular heartbeat (palpitations) stomach problems (gnawing feeling, nausea, butterflies, diarrhea, irritated bowel syndrome) sweating, or feeling cold and clammy headaches, lightheadedness or dizziness body tension or aches fatigue or shortness of breath shaking, trembling or twitching ...