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.
The core is the center of gravity and where all movement begins. It is also the center of stability for the lower limb, from the foot to the hip. In order for muscles to move bone other muscles need to hold on to bones creating a solid base. have put together an evaluation of specific tests to determine muscle strength of the core muscles. One of the tests I use is a simple single leg stance position. It is amazing how many athletes have difficulty standing on one leg for 6 seconds.