159,658
Breatherians are people that believe that they don't have to eat, and can extract all their neccecary nutriets from the air and sunlight. They also think that food is really bad for your health, because it contains soo many bacterias and stuff.
The bonus fun about them is that despite of their claims of not eating any food in years, they still have fully stocked kitchens, with all sorts of cooking aparatuses.
Put them under 24 hours per day surveillance to make shure that they're actually not eating, and they loose quarters of their body weight in mere days, and get weird stuff like a heightened hartbeat, and symptoms of sickness, "because the air. It knows..."