This time of year, it's sometimes inevitable that a sneaky little virus will find its way through our immune systems. The weather changes, folks are cooped up inside away from cooler temperatures -- it happens. When the coughs and sniffles creep up, we naturally want to reach for home remedies -- Starbucks' "medicine ball," anyone? -- that will have us feeling tip-top again. These five tonic and tea recipes with natural ingredients promise to have you feeling better from the inside out.