When the stresses of life in Washington became too much, John Quincy Adams calmed his nerves by taking early-morning swims in the Potomac River. In a move that might be considered questionable by today’s standards, he especially liked to soak in the brisk, cold water wearing nothing but his own skin. According to local lore, it once got him into a bit of trouble: Anne Royall, a trailblazing journalist, caught him in a very awkward situation. But is there any truth in the tale?