Guess what? There’s no law that says you have to work until you hit 65 before you can retire (seriously, we did some research). And a growing number of Americans are ditching the workforce early and getting a head start on retirement.

But there’s a new wave of young people who are trying to take early retirement to a whole new level. We’re talking retiring in their 40s or even their 30s! And they even have a catchy acronym for their movement. It’s called FIRE, which stands for financial independence, retire early.

People in the FIRE movement believe it’s possible to retire decades before they can get a senior discount at Denny’s. But how? Is it actually realistic to retire at age 45? Or even 35?…