Miles Austin missed six games in 2011 because of a lingering hamstring injury, leading to a decline in catches and yards.
The wide receiver blamed a lack of physical preparation on the disappointing campaign.
"I feel like last year I wasn't prepared for the season the way I should've been condition-wise, even though I looked and felt it at the time," Austin said.
"That's one thing that I have to keep an eye on. To make sure I'm in the best physical shape I can be."
Miles Austin 'Wasn't Prepared' Last Season