It could be a Yes or No. Caffeine could be beneficial or be a retardant, which is often based on the rate at which you take it. On the positive side, caffeine could stimulate your body’s metabolism and keep you alert and active. However, it becomes temperamentally of a negative effect on your body system, especially when you take it in large quantities, and it becomes addictive. Once you overdose on caffeine intake, it could lead to heart problems and mental health.