Type of Stress... PHYSICAL: Intense exertion, manual labor, lack of sleep, travel. CHEMICAL: Drugs, alcohol, caffeine, nicotine and environmental pollutants such as cleaning chemicals or pesticides. MENTAL: Perfectionism, worry, anxiety, long work hours. EMOTIONAL: Anger, guilt, loneliness, sadness, fear. NUTRITIONAL: food allergies, vitamin and mineral deficiency TRAUMATIC: Injuries or burns, surgery, illness, infections, extreme temperatures. OTHER.. Troubled relationships, financial or career pressures, challenges with life goals. Counseling session is very helpful.