Health stations are a major part of many first-person video games. When a player has taken damage from enemies, he or she can visit the well-marked stations to receive instant medical aid, and walk away good as new. I have created one of these stations in the real world, but instead of providing first aid treatment, it detects the amount of humidity in a subject's breath, and administers a sterilizing sweep of ultraviolet light if it determines that the body's moisture level may support the rampant multiplication of viruses and bacteria.