Our expert says:
I suggest you take it easier than you were last year, when you might have been overdoing it. I suggest too, that you send this query to Cyberdoc for a medical opinion.
Your not eating breakfast or drinking adequately definitely wouldn't cause your heart block, but could contribute to the low blood pressure and light-headedness. So I recommend you eat a carbohydrate snack before exercising and make sure you are properly hydrated whilst you exercise.
Also make sure that you are eating adequately,perhaps chat to Dietdoc about your eating habits.
I hope this helps a little.
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