Raiders RB Rashad Jennings takes unusual measure to try to stay healthy

Rashad Jennings takes every precaution he can to keep his body in top shape necessary for an NFL running back.

He eats a gluten-free diet and sticks to organic foods. He stretches every night and has a regular routine of pilates, acupuncture, yoga and massage.

And when Jennings' long days of training camp are over instead of settling into a soft bed, he climbs into a hyperbaric oxygen chamber to sleep.

Jennings bought the oxygen chamber as a rookie instead of splurging for a car, thinking it would help keep him fresh and prolong his career.

The Oakland Raiders are counting on a healthy Jennings this season as the backup to Darren McFadden, who has never made it through an NFL season without an injury.