Our teacher cautions us that the corpse pose is the most difficult of all yoga postures to master, but after an hour’s exertion in warrior pose, downward-facing dog and cobra, the prospect of relaxing horizontally on one’s yoga mat brings both relief and the impertinent question, “How hard can it be?” Fascinated, I report to my husband, “Every day at the conclusion of yoga class we practice dying.” “That’s interesting,” he says, trying to share my enthusiasm. “It’s kind of like Lent,” I venture. "Lent is when we’re supposed to practice dying, right?”