To change the filter on this type of refrigerator, gently slide the unit out, unplug the unit from power, turn off the water valve, remove and replace the water filter, turn water valve back on, check for leaks, plug refrigerator back into the power outlet, slide unit back in place, and you are done.
Although very simple, balance exercises can greatly strengthen your center of gravity. Any exercise that is done on one leg can be considered a balance exercise. Standing on one leg will improve your body's ability to center its mass over one leg.
Increased heart rate when you stand up from a resting position. You see, your heart pumps blood to the brain when it beats. If there's a sudden and dramatic increase in pulse rate, not enough blood gets to the brain and you get dizzy. So the increase in pulse and dizziness upon standing are key for diagnosis.