George Manriquez is starting early, working out at Planet Fitness after a holiday season filled with good eats.

"Too many tamales and too much menudo and all that good stuff,” Manriquez said. “So I’ve got to work it out!”

He's just one of many vowing to get fit in 2010, and he knows it won't be easy.

“It's easy to gain the weight, but to take it off, it's extreme," he said, laughing.

Managers at the gym know that too, so they offered some advice on how to commit to a healthy lifestyle.

"Don't see it so much as a diet or something temporary, see it as a lifestyle,” said Javier Medina. “Make a commitment, something you can chop away at little by little every day."

Medina also says to get informed and consult a personal trainer, something Planet Fitness offers for free.

"The more informed you are, the more likely you'll stick with it and implement a plan,” he said. "And make it a priority, see where you stand health wise, and see a physician."

And that's another key -- don't make it all about the weight, but instead, your health. That's what Manriquez is doing to make sure he sticks with his plan.

“My goal is just to get healthy, stay healthy, that's pretty much it,” he said. “And if I lose some weight and look ok, then I’ll take that too!"

Planet Fitness is now offering memberships for $10 a month through Jan. 8. They expect to get about 1,000 new members in the next week.