If anything, the Bears have been one of the better conditioned teams in the NFL under Lovie. Urlacher, Briggs, Peppers, Idonije, and the CBs have been on the field a ton of plays the last few years. Offensively, Forte has been in great shape the last 2-3 years after having knee surgery before his 2nd year (I believe). The only cases of players being overweight/out of shape are Marcus Harrison and players who have had offseason surgeries, but all have gotten it together pretty quickly.