So you challenge your muscles, but you should also be challenging your brain just as much. One of the best ways to do it is through games that keep you engaged. The problem is trying to figure out what the benefits are.
Does the science back up what all those brain training companies are selling?
Most of the research that has appeared has been unable to prove a direct correlation to IQ and doing certain exercises (source). The problem before was that companies were claiming that these games benefit the brain in a certain way, and they did not (see Lumos Labs VS. FTC).
Result Summary: People that engaged in high cognitive engagement may slow the onset and progression of Alzheimers and can help reduce dementia 'up to a certain point'.
Result Summary: Benefits for these types of games were observed with improvements in those speicific games (like sudoku and crosswords). They did not find any 'transfer effects' for other brain games which were a similar type of 'game' (memory, spacial reasoning etc).
Crafting a workout for the gym is extremely important. Consideration should be maintained throughout your designing process. If you just want to find one to use we offer plenty here. If you want to make your own you can start now.
Tracking Your WeightsThere are lots of easy ways to track your sets and reps. One easy way is through a little book that you can take with you to the gym. This book has progress charts, workouts and lots of tools you can use to always make sure you are improving.