Flop down on the floor and then get up. Did you need to put your hand or your elbow on the floor as you went down? How about when you got up? It’s a test and an exercise.
The idea is that some researchers have found that those who can sit down and get up using no hands are likely to live for longer. The more that you have to use other parts of your body – elbows, knees etc to help you up then the more mortality is affected….