Today after cycling rather energetically up a hill (a hill I cycle up regularly to get into town) I had a really funny turn once I stopped: racing heart (I could hear it pounding), light-headedness etc. Even after I had my breath back my heart was still pounding and it is really odd. Luckily the people I had gone to see were really nice to me and gave me something to eat and drink to see if that would help. It did stop.
I've had a turn like this before, about three times I think (always after vigorous exercise). I am quite fit: zumba every week, I cycle everywhere, walk fast etc. I'm hoping this is just nothing to worry about but it is quite frightening when it happens as my heart feels as if it wants to jump out of my chest and I now feel really tired and spacy. Wish I could just take a nap but children to look after. Anyone else ever experienced this? Just need reassurance I think.