BOSTON -- City health officials are asking residents to trade the soda for a healthier life this summer.

Health officials said on a typical day, 80 percent of young people drink soda.

"It's just easier to get to than water," said James Pina, 15.

Pina said soft drinks are sold everywhere, are cheap and companies are constantly pushing them with advertising. But despite that, he's taking on a challenge from the city of Boston.

"Either giving up or reducing soda consumption for the summer, and hopefully it will be a lifestyle change they can continue," said Anne McHugh, of the Boston Public Health Commission.

Health officials said if you drink one 12-ounce soda a day, you could end up packing on 15 pounds by the end of the year. It's not only a weight issue, but it could cause other health problems, like heart disease and diabetes.

So starting Tuesday, the city wants residents to take a pledge on Facebook to avoid soda this summer. Participants are entered into weekly raffles for healthy options like fitness training or a bike.

Pina said he is ready.

"I guess because I want to set an example for younger kids. I don't want them to drink a lot of unhealthy things so they won't be able to do the sports they want this summer," he said.

Pina said instead of reaching for soda this summer, he will grab a raspberry seltzer.

The American Beverage Association responded to the challenge saying, "Campaigns like Soda Free Summer do nothing to teach people about balance and moderation."