Are you trying to maintain optimum weight? Do you need to lose a few pounds? WHEN do you eat? A study reported in “The Scientist” indicates that asynchrony between the master clock of the suprachiasmatic nucleus (SCN and multiple peripheral “clocks,” including the gut, can cause health problems and can interfere with a person maintaining an optimum weight. Intestinal motility and absorption differ depending on the time of day. Like all of the body’s clocks, these rhythms are guided by clock genes that operate in a transcriptional feedback loop. Frank Scheer of Harvard Medical School and Marta Garault of Murcia University studied 420 dieters in Spain. They discovered that the timing of the main meal (before 3pm, which for Spaniards is lunch), predicted the success of weight loss. So, WHEN do YOU eat?