Sport junkie or sofa potato? All the time on time or usually late? The animal kingdom, too, is residence to a variety of personalities, every with its personal way of life. Biologists report on a shocking discovery: even easy marine polychaete worms form their day-to-day lives on the idea of extremely particular person rhythms. This range is of curiosity not only for the way forward for species and populations in a altering surroundings, but in addition for drugs.