8 photos that show how much David Letterman is loving retirement

A lot changes when you leave your job for good: the freedom to choose what to do with most of your hours, your mental focus.

And then there are the visual changes. David Letterman has proven a man's look can change a lot in retirement, as he's stepped out since leaving CBS's "Late Show" with a huge, bushy beard and, more recently, what appears to be a shaved head.

Letterman also looks distinctly happy. Following his 33-year career in late-night hosting, he's been exercising by the beach in the Caribbean and visiting his hometown. This is a man who looks like he has no care in the world.

See how David Letterman has been living it up in retirement below: