
It looks like it comes from some serious time at the gym. From lunges to bicep curls/overhead press to elevated push-ups,
Hayden Panettiere's trainer puts her through the ringer.

While we saw many of our favorite fit female celebrities working to get even fitter in 2007, none more so than Jessica Biel. When she is not
walking her dogs, she can be seen hitting the
track for a tough session of plyometrics, hitting the beach for a fun
workout in the sand, practicing
her golf swing, and bumming around post workout with her slightly less fit, but really cute boyfriend
Justin Timberlake. So it's no surprise that you guys picked Jessica as your
favorite fit female celebrity of 2007!

Hayden Panettiere has been seriously
hitting the gym lately and she seems to love her
Under Armour gear. I personally love that she mixes it up with color — today she is sporting bright pink shorts that I just have to have.
To see where to get them, just read more
Hayden's
HeatGear UA Tech Shorts ($22) look very similar to the
Nike Tempo shorts, but are just a bit less expensive.

Hayden Panettiere looking super cute leaving the gym recently. I am loving her youthful and fun workout gear (much brighter than my all my black clothes). I may feel inspired to brighten it up a bit, besides the winter is dark enough as it is why not brighten it up?

Celebs are really getting on board for Skin Cancer Awareness as Neutrogena recently asked celebrities to create for charity, original signed artwork, (using colored pencils and markers), which illustrate the sun. The one-of-a-kind drawings are currently being auctioned off on
eBay.com until Tuesday, May 8, 2007 at 12:00pm PDT. All proceeds will benefit the American Cancer Society - Skin Cancer Research.