A French artist has kicked off a weeklong stay inside a 13-ton boulder. Sounds awful, right? Well, it's only the start of what Abraham Poincheval calls "an inner journey to find out what the world is." After seven days confined to a sitting position in a limestone rock shaped like an egg at Paris' Palais de Tokyo museum—a feat that began Wednesday—Poincheval will spend 23.5 hours a day sitting on chicken eggs in order to hatch them, a process that's expected to take three or four weeks. While it certainly won't be a comfortable endeavor, Poincheval should generally know what to expect. He's previously spent eight days buried underground, a week on top of a 65-foot pole, and two weeks inside a stuffed bear, reports AFP.
Poincheval says he's been preparing for months for the "Stone" performance—with the goal "to feel the aging stone inside the rock," he tells Quartz—and has all the kinks worked out. In addition to some padding, according to one witness, he'll also have access to air, a toilet, an emergency phone line, and a heart monitor as he munches on dried meat, soup, and other liquids. Once outside the egg, he'll eat plenty of ginger—allowing his blood vessels to expand, increasing body heat—to help him keep the chicken eggs at a minimum of 98 degrees while inside a glass encasement at the museum in a performance dubbed "Egg." After the eggs hatch, the chicks will "go and live with my parents," Poincheval says. (This performance art was probably less comfortable.)