I'd say something witty about probably being the only untrained wannabe-mentat here, but I forgot the punchline.

Currently training

Basic breathing and relaxation techniques

Currently researching / building

lojban number mnemonics lojban has (canonically ;) ten digits, each having a name consisting of a consonant and then a vowel (1=pa, 2=re, 3=ci, 4=vo, 5=mu, 6=xa, 7=ze, 8=bi, 9=so, 0=no). New lojban words are build from rafsi, syllables corresponding to words. Thus lojban inherently creates sets of pegs each corresponding to a number. And now let's embed that in a narrative... once I've learned lojban. Whichs vocabulary I'm working through to create taxonomies and other systematizations so I can learn them more efficiently (i.e. all colours, shapes, astronomic phenomena (did you know that lojban is inherently terracentric?) in a group) using the Leitner system.

Spaced repetition Trying out Mnemosyne. What I want to learn:

lojban vocabulary
Hamburgs subway stations

Speed reading

Eliminate subvocalization through pacing
Use three to four fixation points per line, avoid the margins, use the full eye span

Buddhist Meditation

vipassana bhavana: Usually called mindfulness or attention meditation in english. This practice is (as far as I understand it) meant to cultivate an insight into how the mind works and how sensory input and ideas are woven into thoughts. As insight is achieved, the process becomes subject to restructuring and control, allowing for retraining the mind to follow more rational and productive patterns.
metta bhavana:

Techniques considered and discarded

Phyabin

Phyabin is a system for PhysioArithmetics that adds 5 registers a 4 bits of number memory in muscle memory.

Multiplication/division would still be complex operations even in binary (bit-pattern matching)
Multiplication would require the numbers to have eight bits in total or less or they'd be too big to be multiplied in the space present.
Even with 2 registers a 8-10 bit (0-255/1023), I still outperform this system with mental arithmetics.
The risk of accidentally toggling a bit in a register while manipulating the hands other register seems high to me.

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