My husband is 50 years old. He lives a stressful lifestyle and quite a sedentary one at that. Just last year we discovered him to be type 2 diabetic and he has been a hypertension patient since good over 9 years. Recently he has been experiencing a problem of day time lethargy, he does sleep for say 6 hours at night but feels sleepy throughout the day to the point of actually dozing off while just watching tv during the day. His weight is around 96. Also his sugar level is often high. What is the reason for his day time lethargy and can this be cured through ayurvedic medicine.