Now, palpitations are really common. And it generally appears as a fluttering in the chest, just about here. A bit like a sort of butterfly in there. Often last thing at night when you’re sitting quietly in bed you feel this and then there’s suddenly a (gasp) bit of a pause and a thump. And what that is, is there’s a pause in the pulse and then a big pulse after that. And that’s entirely normal. Occasionally it’s associated with diseases such as the thyroid gland. But rarely. And, occasionally, with drinking too much caffeine, so too much coffee. And you may get no symptoms of this. But, you get an irregular pulse. So what’s important is every now and then to check your pulse. Is it regular? If it’s irregular, then it’s sensible to see your doctor. Because what this is, is the top bit of the heart, the atria, are beating irregularly. A heartbeat starts when an electrical impulse is produced by the sinus node. This causes the atria, the top of the heart, to contract ...