I don't think riding a bike in a yard is zero. Zero should be "wears a helmet, knee pads, groin cup and a seatbelt to sit on the couch", or "never drinks anyth

I don't think riding a bike in a yard is zero. Zero should be "wears a helmet, knee pads, groin cup and a seatbelt to sit on the couch", or "never drinks anything but room temperature filtered water".