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Electrocardiography (EKG) can be measured both noninvasively with electrocardiogram (and it's the most common, totally safe and painless method), as well as invasively with implantable loop recorder (used in extraordinary circumstances).
I think the area is wait is there supposed to be a pic?
Drink at the hall fountain each time they pass through.
Have a big cup of water at lunch.
Drink more water on the way to practice.
Don't skip the water breaks; Drink when it's encouraged by the coach.
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