>Do drugs or advances in nutrition and training play a significant role? It seems like nutrition is a minor factor compared to the intrinsic nature of the QB p

>Do drugs or advances in nutrition and training play a significant role? It seems like nutrition is a minor factor compared to the intrinsic nature of the QB position itself. In other words, even if non-QB positions like running backs and linebackers adopted Tom Brady's exact diet such as avocados and exotic water, etc, that still wouldn't extend their career into age 45. The brutal physical nature of those non-QB positions depends too much on strength and speed and those attributes decline too much into the 40s. Long before Tom Brady, other QBs like Steve Deberg and Vinny Testaverde played at age 44. As for drugs... if the NFL allowed steroids, it might be possible for physically demanding positions like running backs to play at age 45. But a drug policy change is unrealistic so that's more of a thought experiment rather than a practical way to extend a football career.