America's battle against childhood obesity is an issue too big for many to fully comprehend. With one in three children overweight, the epidemic is sweeping our nation at an unforgiving rate. But in spite of these odds, Bite Size showcases the stories of four inspiring kids from diverse backgrounds who are fighting for their health one day at a time. Proving that it's not just about the number on a scale, what really matters is learning what keeps you active and makes you happy.