1 1.0 is normal speed, 0 is stopped, numbers between 0 and 1.0 are slower playback, negative numbers are rewind and numbers higher than 1.0 are faster playback.  The forward and backward buttons to the right of Play speed are for moving videos frame by frame.
Slow Food Movement. An international movement begun by Carlo Petrini with a forerunner organisation, Arcigola, founded in 1986 to resist the opening of a McDonald's (fast food restaurant) near the Spanish Steps in Rome.
Water helps assist with this process. If you eat a lot of processed foods (frozen foods, pizza, cafeteria food, fast food, etc) and you don't eat a lot of fresh local vegetables, fruits and whole grains like flax seed.... then your intestinal tract is full of slow moving stuff and this is very hard on your intestinal tract.