Most of the body energy drinks are safe to drink in moderation, but some special circumstances are not suitable for drinking, such as drinking before bedtime causes insomnia, diabetic patients drinking leads to poor control of blood glucose, etc., overdrinking is likely to lead to obesity. Body energy drinks, mainly in the water added glucose, certain vitamins, sodium, potassium and other electrolytes, caffeine and other substances in one or several. In most cases, it is safe for human body, for example, glucose can provide energy, and caffeine can play the role of excitation of the nerves. But some special circumstances are not suitable for drinking, and may even cause damage to the human body, such as drinking before going to bed may cause insomnia; liver and kidney failure patients with decreased material metabolism, insufficient water excretion may cause electrolyte disorders, edema and other consequences; diabetic patients to drink the body energy drink, is not conducive to the control of blood sugar. Furthermore, relying on caffeine to maintain neurological activity will further aggravate the burden on the already tired nervous system, so that the nervous system does not get enough rest and relief, aggravating insomnia. Excessive consumption of body energy drinks can easily lead to obesity.