Yeah, this is my (admittedly biased, but no more biased than fans of other players) view too. I'm not saying it's impossible he's up to something else. But on the other hand, is it really that difficult to believe that he got tired of playing the perpetual #3 and consequently much more serious about his fitness in mid-2010?
Mate, if it is just a matter of decision, why wouldn't all the others be tired already being where they are?
They all are, that's why most of them train at the maximum of a human's physical limit. Many of them are doing it already when Nole was a bit lazier.
Assuming he had a huge reserve that he just decided to use at one point is not logical.
Borg has been a phenomenon, having an extreme low heart rate, some crazy physical capabilities and his success was based on these as well as his other qualities ofc.
But until National Geographic comes up with the insane newly found genetic code in Djokovic's blood, that allows him to never sleep, eat only bananas (just examples) and run 100m for 3 seconds, i'm not buying the miracle secret recovery.
Maybe i'm not a beliedjer, but i've been raised to question things around me