Binges, benders, lost weekends... all basic forms of modern-day hedonism. On the Lash examines the culture and science of legal and illegal excess, entering the minds and bodies of those who just don't seem to know how to say no. Using CGI graphics, this BBC science documentary explores what goes on in our bodies when we party; how much damage our excessive habits are doing; and whether the effects of bad living can be reversed by dieting and detox. Be prepared for some shocking revelations about our lifestyles; it may just make you look at your own in a completely new light.