The book details the most up-to-date thinking in science about how diet, the environment, stress and other aspects of modern life affect our mental capacity and distils them in the form of chunks of advice as well as exercises.Ahh. Now I know why my brain hasn't been up to speed. Note to self: Need more *ahem* to boost brain power.
It also points out that of the seven different chemical reactions that the brain undergoes in the sexual process, from contemplating intercourse to achieving orgasm, four help the thinking process. The ensuing increase in levels of the 'trust' hormone, oxytocin, for example, increases readiness to think of novel or risky solutions.
Similarly, the post-coital rise in serotonin levels aids both creative thinking and calm, logical decision-making.