Respuesta :

bianca0205
Heart beats increase for no reason or skips beats sometimes because of anxiety or stress. When the body is put under too much stress, it needs to act out and normally it is through your heart palpitations.

Your answer is: Stress and anxiety 

Have an amazing day!
Insanity
Most of the time, they're caused by stress and anxiety, or because you’ve had too much caffeine, nicotine, or alcohol.

Hope this helps!