The standard way to take blood pressure is to take the blood pressure sitting for 5 minutes. Exercise and physical activity increase the blood pressure and this is normal. The normal blood pressures that you quote are for 5 minutes sitting comfortably in a chair with your arms at rest. You should not take your blood pressure until you rest if you use the normals that you quote. Statins do not have any ill effects as long as they are monitored. Statins can cause muscle injury in some individuals that can affect kidney function, however, statins have also prevented heart attacks in kidney patients. This is why they are used. Water intake can be at any time and the kidney can handle the water intake whenever it is.
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