Dave the Barbarian

Dave the Barbarian is a Disney Channel original series by Doug Langdale that ran from 2004 to 2005. The show takes place during the Middle Ages in the kingdom of Udrogoth. The king and queen set out to fight evil in the world and left their children in charge. They are Dave, the strong and cowardly barbarian, Candy, his older sister and princess, and his younger sister Fang. Along with their wizard uncle Oswidge, pet dragon Faffy, and Lula the talking sword, they run and defend the kingdom.

Beef!
Season 1, Episode 4a Airdate: January 23, 2004

Candy seeks instant muscle gratification, but the magic broccoli she eats to strengthen her muscles makes her dumber and wanting to eat more.

Candy eats magic broccoli and gets huge muscles in order to show up the also-huge Bicepia the Warrior Woman. The broccoli eventually turns her into a ginormous mountain of Neanderthal muscle.

Plunderball
Season 1, Episode 20b Airdate: January 21, 2005

Princess Irmaplotz flexes muscles by winning the points of her team.

Happy Glasses
Season 1, Episode 21b Airdate: January 22, 2005

Candy and family hugely bulked-up, actually barbaric barbarians. Even Fang herself as well, too, while wearing a pair of magic glasses.