The shooting sports have a lot of attributes that appeal to different mental aspects of rationality:

• they require careful observation of internal mental states
• academic knowledge can directly contribute to success (such as knowing a lot about human vision)
• lots of opportunities to indulge in obsession over microimprovements
• pre-event, post-event and on-the-fly computational skills are immensely useful
• unusual conscious states, such as time slowdown, are relatively easy to achieve without chemical assistance

Potential drawbacks: associated in the USA with right-wing politics; distrusted by liberals; expensive; requires ownership of dangerous tools.