I'm not sure having a "six pack" means a lot. I've read several accounts from actors (Jackman, Evans, Aniston, to name few) who - in order to appear completely ripped during shirtless / mid-drift scenes - will virtually starve themselves of food and water for 24-48 hours prior. This gives them the appearance of having insanely ripped physiques, when in reality they don't look that way. I get that professional athletes are paid to take care of their bodies and work out constantly, but I don't think that having a six-pack is necessarily indicative of being in shape. There are plenty of athletes out there with different body types who show great endurance and ability despite not being "chiseled". Football examples off the top of my head include Terrell Suggs (SB v 49'ers), Lance Briggs (in fairness, white is never slimming), Reggie White (even in his prime), and Peyton Manning (dude has NEVER looked in great shape). From a non-professional athlete perspective, I am 37.5 years old, have between 10-12% body fat (it varies) and do not have a "six pack". I work my core pretty hard at least three days a week to support my running (15-20 miles a week), plus lift weights. Some folks are lucky enough to have what is considered by the tabloids to be a "great body", others are not. Part of the reason I don't look as good as some with my shirt off may be dietary (3 liters of water per day, vegan diet, and several alcoholic bevies per week), part may be genetics. Regardless, I bet I have better overall "fitness" than many who are smaller and have "tighter skin" than me. Point is - I couldn't care less about what Shea's body looks like so long as he is fit, has endurance to play at speed for 9-10 straight plays, uses proper technique in coverage, tackling and filling gaps, and understands/executes his role in the defensive scheme. The rest is largely bull**** (i.e., Alonzo Spellman or Tony Mandrich).