Here's a technique I use to stay sharp.

I deal myself a 5 card hand from a standard deck. Then I think about what decision I would make based on which game I was playing (Deuces Wild, 9/6 Jacks, etc.).

After I go through all the possible games and decisions, I deal a new hand and start again. This makes it easier for me to stay sharp and quickly make the transition from one game to another.

If you try it, let me know what you think.

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Luck be a Lady