I prefer diet and exercise over stimulants, but it's HARD to maintain.

There is science behind the former though:

+ Hunter, fighter, wader theory; having ADHD got us out of our caves and increased random or policy driven exploration [1]

+ ADHD has benefits to society through neurodiversity [2]

[1]: https://www.ncbi.nlm.nih.gov/pubmed/8955426 [2]: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1578754/