Hi. I have been playing around with various supplements for my health issues mainly which are CFS and Fibro for 10 years now. Which naturally got me interested in Nootropics years ago. I remember trying TDCS back in the day and was so impressed by it. Over the period of years I have found some that can be so helpful in clearing brain fog, alertness and others not so much. These days I am trying out a few supplements namely Alpha GPC which has noticeably improved my recall. But it's not as good as some other supplements I have tried. Also I feel like whatever Alpha GPC was doing for last few weeks, my body has tried to downregulate and I feel the effect has diminished which got me thinking I have used several memory tests over the period of years but haven't found any that were very reliable. Do you guys use any tests to measure your nootropics performance empirically. I would be interested in finding out what you guys think are good tests and which ones aren't!