Productivity can be improved with the help of removing speed bumps and comforts such as sitting down, internal emails or even heating the room. (ok, the heating idea isn't real.) Still, ideas such as no lunch at your desk are being shared as a means to increasing work output. Read on and tell me, would the old days before email, when people actually collaborated by talking to each other, move things along better? Sounds promising, but I'm sure than withdrawal would not be not easy. Business.com shares these reflections on killing productivity killers here.