People who choose to skip sleep to study, work or play late into the night may find they’ve extended not just their waking hours but also their tummies. A small new study found that the basic problem sources back to the fact that people who don’t get enough sleep tend to eat more. Even worse, all those extra calories wind up precisely where most people don’t want it: around the belly. “Our work focused on people who chose to sleep less,” explained study author Dr. Virend Somers, a professor of cardiovascular medicine with the Mayo Clinic College of Medicine in Rochester, Minn. “It wasn’t about insomnia, so much as, say, a student in college who decides they find it necessary to sleep less for a while in order to get their work done. “But what we found is that when a relatively young, healthy and lean person is sleep-deprived and has unrestricted access to …