Heart attack symptoms vary. Not all people who have heart attacks have the same symptoms or have the same severity of symptoms. Some people have mild pain; others have more severe pain. Some people have no symptoms, while for others, the first sign may be sudden cardiac arrest.
The Institute of Medicine recommends that pregnant women drink 10 cups (2.4 liters) of water each day. Itâs smart to get in the habit now, because if you decide to breast-feed, that requirement increases to 12.5 cups (3 liters) each day.
The experiment: It is a fairly simple experiment and doesn't involve a trip to Lourdes, or the Ganges, which would be a bit of a faff. I have to drink 3 litres of water a day for 4 weeks. That is a lot of water, considering at the moment I probably drink about half a cup. I have a bit of a false start as I spend a week counting loads of tea as 3 litres of water - apparently it has to be the pure stuff, so I regroup and start again, really seriously this time.