Migratory birds, it seems, instinctively understand the link between food, health, and physical performance.
During other times of the year, migratory birds eat primarily insects and seeds. During migration, however, they eat deeply colored berries.
Why the change? Deeply colored berries are loaded with antioxidants, which have been shown in animals and humans to negate the oxidation exacerbated by bad diet, environmental pollution, and physical exertion.
Oxidation creates the inflammation that can lead to aging and disease.