Red grapes are crunchy, sweet, and juicy, perfect for healthy snacking. They add a delicious crunch to chicken dishes and green salads. You can also freeze grapes and add to sangria or other cold drinks. They are best stored in the refrigerator where they will last up to two weeks. Grape seeds have certain substances like flavonoids, linoleic acid and phenolic procyanidins that help protect blood vessels and arteries from damage that leads to high blood pressure and a number of other cardiovascular problems. So when eating grape seeds will prevent high blood pressure, cardiovascular disease.