Many gym-goers looking for a quick energy boost resort to energy drinks. While you may think that this is enhancing your gym session, it’s actually doing more harm than good. The common ingredients in these drinks usually include sugar, caffeine or guarana, amino acids, and herbal supplements. They also have added stimulants that may potentially cause harm to the body. Consuming too much caffeine can be extremely dangerous. It can lead to insomnia, headaches, anxiety, restlessness, nervousness, nausea, and irritability. Here are the most dangerous energy drinks.