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.
this is why you get light headed when you are sitting and stand all of a sudden because when you are sitting your blood tends to pool up in your legs and standing all of a sudden sends a sudden huge burst of a lot of blood to your brain. your brain gets a little oxygen starved when you are sitting. Source(s):