Photo: Kevin Winter, Getty Images

Ashley Borden has plenty of famous clients -- Mandy Moore, Natasha Bedingfield and Ryan Gosling, to name a few. But this spokesperson for the Nintendo Wii and Nike Elite Athlete is known for more than just getting celebrities into red carpet-ready shape. She's known for her commitment to the environment.

EcoStiletto has some great tips from Borden on eco-sensitive (but totally effective) workouts. Some tips are obvious, like bring reusable water bottles and buy organic, sustainably-made workout clothing.

But some are not quite as common, like using tools that allow you to work out at home using just your own body weight rather than using a plugged-in machine. It makes sense, of course, but most gym-goers probably don't consider their time on the treadmill to be hard on the environment.

Do you keep the carbon-footprint on your workout low, or do you have tips to share? You might be surprised at some of the events that are seriously not green!