I work 8 hrs per day in a closed room, same people everyday, and the one right next to me was everyday sniffing,
coughing, constantly sick, you know. In September I was on vacation for two weeks and I was overconfident, so I quit suplements. When I got back to work it was the worst day I can remember: everybody in the room started coughing hard all day long, except me of course. That day I read this post about Liquid Clorophyl and I decided to give it a try.