At age 35, he simply can't afford to.
Brees appears on the regional cover of this week's Sports Illustrated detailing his training regiment in preparation for his 14th NFL season. Eight seasons removed from tearing the labrum in his right shoulder and suffering a partial tear of his rotator cuff while playing with the San Diego Chargers, Brees gets in prime shape in the San Diego area, where he keeps a home.
Brees doesn't bulk up on his 6-foot, 209-pound frame by lifting weights, instead he builds his workout routine focusing on flexibility, core stability and rotational strength.
"You don't throw with your arm, you throw with your core," Brees, an eight-time Pro Bowl quarterback, said. "It's the focus point of the whole body."
Brees completed 68.6 percent of his throws for 5,162 yards and 39 touchdowns last season, leading the Saints to a wild card playoff victory over the Philadelphia Eagles.
For more on Brees, check out Austin Murphy's piece in this week's issue of Sports Illustrated (subscribe here).