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.
Standing in hyperextension puts excess pressure on your heels and the front of your shins, which can lead to inflammation. It may also tilt the top of your pelvis forward, which can stress your hip joints, overarch your lower back, and disturb your posture all the way up to your neck and head.