[jamiecurle]

An excellent point.

If I was being a pedant (which I tacitly now am), I'd be tempted to add two things:

1 - mindfulness meditation. Building the ability of the mind to hold attention is arguably just as useful as training the muscles. Especially for longer term knowledge workers who "get a bit bored of this staring at the screen thing". Like me. This comment is evidence of my ability to procrastinate.

2 - eat wide and well. Up to the individual to decide what that translates into, but eating wide and well will give you all the range of macro and micro nutrients you'll need for optimum cognitive performance.