[TeamSavage]

I just take a single piece of paper to the gym that I can fold up in my pocket. It's a printed copy of a spreadsheet of my workout. This is easier than bringing a book. Then, once I've filled up a sheet, I just add it to a binder with all my past data. But you could also just record it in a spreadsheet.

I agree, keeping a log is key. Really helps track long-term progress, and also helps to know how you did last workout to motivate yourself for the present.

[HDeuce7]

I created excell spreadsheets that are formated to input exercises, sets, reps, day, and date. I create a workout for a month or two, print it out, go to staples or office depot, make copies, and have them spiral bind it. It cost $5 for 1. I believe it is a great investment.