increasing mental endurance

[daven]

heads-up sit n gos. I play the hyperturbos.

what is game availability like, is it a limiting factor?

1. learn to maintain focus during the whole 15-25 min session (currently I can do it for roughly 10 min)

What approach are you going to use to do this?

I will follow with interest, i like that you have a plan that sounds well thought out!