As fabulous as we at That's Fit think this blog is, the truth is there are hundreds of wonderful blogs on healthy living to be seen all over the blogosphere. So in this feature, Fit Links, we'll introduce you to some that have caught our eye.

Think a calorie is a calorie? Think again -- as Calorie Lab points out, not all calories are created equal, and knowing the difference can make a big impact on the scale.

Over at Health.com, they're counting down the best fitness buys of 2009.

How cute -- Reese Witherspoon and Jake Gyllenhaal have matching his-n-hers fitness gear. You know what they say -- a couple that exercises together ... erm ... stays together ... ?

Over at Shape Magazine, a few of country's hottest stars are talking fitness -- in their bikinis.

Reese Witherspoon has been looking pretty fantastic lately and while she certainly can attribute some of that to her jogging sessions with boyfriend Jake Gyllenhaal, she's also giving credit to a new workout invented by her personal trainer, Matthew Reyes, called YogaHop.

Reyes explains, "Most people think yoga is all granola and hippies, so I love to explain how YogaHop is not like that. Imagine all the benefits of Hatha Yoga, then add chart music that will have you bouncing into the poses." Reese obviously agrees, as she tries to attend the 90-minute class two or three times a week, occasionally taking Jake along with her.

It's hard for me to picture, but I can imagine how joining the flexibility of practicing yoga with a more upbeat, energetic workout would be fun. Have you ever tried YogaHop, or anything like it? Because, if it's good enough for Reese, I'm thinking it's good enough for me.

Flip through the gallery below for more celebrity fitness secrets.

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Celebrities are really just like us -- they have to work out and eat well in order to be fit. But that doesn't stop us from wanting to know all their secrets! And here at That's Fit, we work hard to keep you up to date on all the exercise and diet-related celeb gossip. Click on the famous faces above to see what your favorite star is up to!