The experiment then is straightforward: cut up a fresh piece of gum, randomly select from it and an equivalent dry piece of gum, and do 5 rounds of dual n-back to test attention/energy & WM. (If it turns out to be placebo, I’ll immediately use the remaining active dose: no sense in wasting gum, and this will test whether nigh-daily use renders nicotine gum useless, similar to how caffeine may be useless if taken daily. If there’s 3 pieces of active gum left, then I wrap it very tightly in Saran wrap which is sticky and air-tight.) The dose will be 1mg or 1/4 a gum. I cut up a dozen pieces into 4 pieces for 48 doses and set them out to dry. Per the previous power analyses, 48 groups of DNB rounds likely will be enough for detecting small-medium effects (partly since we will be only looking at one metric - average % right per 5 rounds - with no need for multiple correction). Analysis will be one-tailed, since we’re looking for whether there is a clear performance improvement and hence a reason to keep using nicotine gum (rather than whether nicotine gum might be harmful).
I ultimately mixed it in with the 3kg of piracetam and included it in that batch of pills. I mixed it very thoroughly, one ingredient at a time, so I’m not very worried about hot spots. But if you are, one clever way to get accurate caffeine measurements is to measure out a large quantity & dissolve it since it’s easier to measure water than powder, and dissolving guarantees even distribution. This can be important because caffeine is, like nicotine, an alkaloid poison which - the dose makes the poison - can kill in high doses, and concentrated powder makes it easy to take too much, as one inept Englishman discovered the hard way. (This dissolving trick is applicable to anything else that dissolves nicely.)
In addition to diet, there are many other things you can also do related to lifestyle, such as stress management through mindfulness (8) or gentle movement such as pre or post natal yoga (9), which have both shown to be incredibly helpful in encouraging mental wellbeing. If you feel you need extra support, personalised nutritional therapy can be very helpful as there can often be other drivers such as nutrient deficiencies and digestive complaints that can play a significant role in mental health and will need to be addressed in a way that is tailored to the individual. 
Brain Pill is an original, safe and effective nootropic agent. Unlike the many agents available in the market that do not guarantee their effectiveness, Brain Pill bases its working abilities in clinical research and trials done to the product. You should, therefore, prioritize purchasing this product if you fall in the fold. Ken Jennings, a 74-game Jeopardy champion recommends this product for enhanced* brain functioning.
Mosconi clarifies a few concepts. Other authors have advanced that the brain needs fat, including saturated fat, and cholesterol to function properly. Not so, Mosconi indicates that the fats we eat (saturated fat from animal protein) and cholesterol can’t even cross the blood-brain barrier. The brain needs a completely different type of fat: essential Polyunsaturated Fatty Acids (PUFAs). They include Omega-3s and Omega-6s fatty acids. Good sources of Omega-3s include fish, oils, eggs.
Is a powerful antioxidant that can help you deal with the brain aging process caused by the harmful effects of free radicals. This ingredient does an amazing job of protecting you against muscle catabolism and brain deterioration. In addition, it helps your blood vessels to expand, so all essential ingredients and oxygen are delivered to your brain. The traditional Chinese medicine has been using this herb to boost memory and mental performance.

Nootropics—the name given to a broad class of so-called "cognitive-enhancing" drugs—are all the rage in Silicon Valley these days. Programmers like nootropics because they’re said to increase productivity and sharpen focus without the intensity or side effects of a prescription drug like Adderall or modafinil. Some users mix their own nootropics using big bins of powders, purchased off the Internet or in supplement stores. And some take pre-made "stacks" that are designed to produce specific effects.
The fish oil can be considered a free sunk cost: I would take it in the absence of an experiment. The empty pill capsules could be used for something else, so we’ll put the 500 at $5. Filling 500 capsules with fish and olive oil will be messy and take an hour. Taking them regularly can be added to my habitual morning routine for vitamin D and the lithium experiment, so that is close to free but we’ll call it an hour over the 250 days. Recording mood/productivity is also free a sunk cost as it’s necessary for the other experiments; but recording dual n-back scores is more expensive: each round is ~2 minutes and one wants >=5, so each block will cost >10 minutes, so 18 tests will be >180 minutes or >3 hours. So >5 hours. Total: 5 + (>5 \times 7.25) = >41.
Systematic reviews and meta-analyses of clinical human research using low doses of certain central nervous system stimulants found enhanced cognition in healthy people.[21][22][23] In particular, the classes of stimulants that demonstrate cognition-enhancing effects in humans act as direct agonists or indirect agonists of dopamine receptor D1, adrenoceptor A2, or both types of receptor in the prefrontal cortex.[21][22][24][25] Relatively high doses of stimulants cause cognitive deficits.[24][25]