Hello. My boyfriend has been complaining about exhaustion lately. Says his left arm sometimes gets tingly. He is only 23, could he be suffering from heart problems already? He is always beating on his chest because it hurts or bothers him. Or he will say that he feels a tough time breathing. A heaviness around his left lung. He says it's his heart however, it's in his upper left region toward the left lung. I'm concerned. I don't know if it could be because of lack of nutrients or if the heat of the machines could be harming his health. Any opinions?