Latest studies show sinusitis is the nations’ number one chronic health problem. And this condition doesn’t just spur congestion and facial pain, it also makes sufferers six times more likely to feel achy all-over. Horseradish to the rescue! According to German researchers, this eye-watering condiment naturally revs up blood flow to the sinus cavities, helping to open and drain clogged sinuses and heal sinus infections more quickly than decongestant sprays do. The study-recommended dose: One teaspoon twice daily (either on its own, or used as a sandwich or meat topping) until symptoms clear.