yeah give more info first. Although, it depends on the person. Aprox. 6 years ago I started having skipped beats in my heart, with a nasty feeling in my chest every time the fucker skip one. Now I'm used to it. Under a natty lifestyle, balanced diet, excercise, sleep and no stimulants, I don't get them. If I take drugs, sleep bad, drink too much coffee, or change weight rapidly, the shit start jumping again.
palpitations could be a symptom of a killer silent disease. Marfan syndrome. A genetic disorder in the Aorta tissue that cause it to grow and expand over the years. For a heavy lifter and drug user, after his 30 is in high risk of having its Aorta explode and pass away in any moment.