Manual treadmill vs. motorized treadmill: Which is better? (Mayo Clinic)

Treadmills are among the most popular exercise machines. A manual treadmill is likely to be less expensive than is a motorized treadmill. A manual treadmill is safer, too, because the belt stops moving when you stop moving.

Jankovic Fights Injury To Claim U.S. Open 2nd Round (Fox News)

Jelena Jankovic's leg cramped so badly, she couldn't take another step. Luckily for the No. 2 seed in the U.S. Open, the agony occurred during her post-match run on the treadmill. Anyone who watched could clearly see she left about everything she had

Obamawatch, Aug. 28 (Rocky Mountain News via Yahoo! News)

Sen. Barack Obama got in a workout at an Anytime Fitness in Billings, Mont., his last stop before Denver. He spent about 40 minutes on a treadmill watching The Today Show, parts of which may have been of particular interest. The program cut away to the scene inside Invesco Field at Mile High, giving Obama a peek at the stage from which he will accept his nomination tonight.

Jankovic guts out tough 2nd round win at US Open (AP via Yahoo! News)

Jelena Jankovic's leg cramped so badly, she couldn't take another step. Luckily for the No. 2 seed in the U.S. Open, the agony occurred during her post-match run on the treadmill. Anyone who watched could clearly see she left about everything she had out on the court.

Exercise in Bed, Literally (ABC News)

A surgeon has designed a bed with a built-in treadmill.