Place the measuring tape, 0 cm level with your feet
Put the soles of your feet, shoulder with apart, against the box/table.
Make sure your knees are held flat against the floor.
Reach towards your feet, and reach as far as possible
After three practices, the fourth is held for over two seconds.
The distance your fingers touch on the measuring tape or the sit and reach table is your score. If you don't make it to your toes then you will get a negative score
Compare results with national averages.