Now tie shoelace on your balls, on end of it tie to bottle and make it hang under off you. Then I want - you must go to the kitchen. Drink one glass of water. Then go back. And sit.
Now stroke to the edge. And count your strokes.
If you stroke less then 100. You must go to the kitchen again with your weigth on balls and dring another glass of water.
If you stroke more then 100 you can untie your balls and then drink another glass of water.