If I drink one bottle of beer and then attempt DDR, I usually fail at anything harder than 6 feet. This is not because I can't keep up, but because the act of parsing the intense stream of arrows against the flashing background makes me feel actively confused to the point of real psychosomatic discomfort; I have to stop moving and cover my eyes for a bit.
This is pretty much the deepest that lightweight jmac dares explore in the realm of mind-altering experimentation. It is kind of interesting, for all that.