Check out this cool video about Jesse Campos, who weighed 220 pounds at age 9, but was inspired by his pediatrician to lose weight by eating healthier and exercising.

Campos, now 17, is 46 pounds lighter at 174 pounds.

“Not only did I gain self confidence from losing weight, but I also [feel] better physically,” said Campos, who appears in the video produced by Kaiser Permanente.