A herpes culture (or HSV DNA testing) may be ordered when someone has a blister or vesicle on their genitals. HSV DNA testing is ordered when a person has encephalitis that the doctor suspects may be caused by a virus. HSV testing may be ordered regularly when a pregnant woman has herpes.
Caffeine stimulates the central nervous system and can produce restlessness, headaches, and irritability. caffeine also elevates your heart rate and blood pressure. Over the long-term as your body gets used to caffeine, it requires higher amounts to get the same effects. Certainly, having your body in a state of hormonal emergency all day long isn't very healthy.
Coffee and Weight Loss in The Long Term. There is one major caveat here, and that is the fact that people become tolerant to the effects of caffeine (15, 16). In the short term, caffeine can boost the metabolic rate and increase fat burning, but after a while people become tolerant to the effects and it stops working.