Did you ever notice that in Battlefield: Bad Company the sprinting works a little bit differently than in Call of Duty 4 and other games with a sprint function? In Cod 4 you click the stick once and you'll keep sprinting until you cancel it or your character runs out of breath. In BF:BC you only sprint for as long as you are holding in the left stick. I think the way Battlefield BC does it is brilliant because it represents you, the player, actually getting tired. Sure in Cod 4 your guy pants but that's a passive way to go about it. In BF: BC, holding the left stick in for long distances literally tires out your thumb. I know it sounds like that wouldn't happen, but try it out. It really does. If you are attempting to run across an open field you will actually sometimes just have to walk there instead of sprint just to give your thumb a rest, and this is complemented by the open-world-ish nature of the levels. If you don't have a vehicle, you're going to have to hoof it for a pretty long time until you find one, and after a while you'll actually have to muster up the thumb energy to run there. I say kudos to Battlefield: Bad Company for coming up with a much more engaging way to handle the sprinting mechanic that's so trendy now in first-person shooters.