Here are a few tips that might help, I tried the Bear Down one and it did work........
Techniques to Stop Heart Palpitations Immediately:
Cough. Yep, a plain o'l cough can supposedly reset the rhythm of your heart. I have tried this with limited success, but others seem to think it works great.
Bear Down. There is no real polite way to say this, but the whole idea is to clinch your stomach muscles to mimic the act of going to the bathroom – pushing out a bowl movement (careful here…you don't want to mess up and do the real thing…). For some reason this reroutes the circuits and the palpitations sometimes go away or at least slow down a little.
Cold Water. Splashing cold water on your face or taking a cold shower shocks your body and resets your normal heart rhythm. I am sure this works for some people, but I hate taking cold showers, so I usually pass on this one unless the palpitations are really bad.
Valsalva Maneuver. A large cause of heart palpitations is the vagus nerve. So stimulating the vagus nerve, which can affect heart rate, will sometimes stop palpitations and possibly restore your normal heart beat. To do the Valsalva maneuver you hold your nose and close your mouth while attempting to breathe out with some force (think of blowing up a balloon). Another technique is to make a fist and blow into it like you are blowing up a balloon. If done correctly, you may experience immediate relief from your palpitations. This technique is similar to “Bearing Down†mentioned above.
Deep Breathing Exercises. Deep breathing exercises are great for reducing anxiety and can certainly help slow down your heart rate, which can reduce your palpitations. So do your favorite deep breathing exercise and see if that does the trick. I really enjoy deep breathing exercises, but when my heart is skipping a whole lot, it is hard to focus on my breathing.
Exercise. I prefer this technique best. I cannot alway exercise when I have a bad run of heart palpitations, especially at night. But if I have some time in the morning or afternoon, a good cardio workout where I can get my heart rate up for an extended amount of time does wonders to restore my normal heart beat…at least for a while.