Use good before the noun (good idea) or after a form of the verb "to be" (the food is good; the drinks are good; the party was good).
Use well after the verb - He sings well, they dance well, I didn't sleep very well.
There is one exception - when somebody asks "How are you?" native English speakers often say "Good!" or "I'm good!" Although this is not technically correct, it is much more common to say "I'm good" than "I'm well" in response to this question.
If you have chronic bronchial flareups, sinus infections or asthma, radishes can act as a natural decongestant. Radishes are known to have cancerdestroying properties. Studies have shown that radish juice may help in the treatment of a growing list of cancers which includes kidney, stomach, intestinal, and colon cancer. Radish juice is rich in anthocyanins and vitamin C, which are known to aid in inhibiting the expansion of cancerous cells.