Increasing high quality fat and protein intake; reducing sugar, simple carbs, and grains.
[this is not an aim to go into ketosis, no need to be extreme]
Methylphenidate at the correct dose
Eat more complex carbohydrates (chickpea pasta, lentil pasta? - trader joes has some good lentil pasta, and goodles are a decent mac and cheese replacement).
Chewing nicotine gum while learning new material
Cold water immersion. (Can be as simple as =>1min in shower under cold water)
Magnesium threonate. 1 capsule in the morning, one before bed. Result- need one less hour of sleep!
modafinil 50 mg 2-3 times per week (lowish dose; could go lower for less effect)
Drinking 2-3 cups of coffee daily.
Eat more vegetables
Eat high quality fats
Supplement to ensure adequate vitamin and mineral levels
Intermittent fasting with an 8-10 hour feeding window, following the same scheduled hours each day.
[even if your schedule is in flux, your fasting/feeding window should remain relatively constant]
Vitamin D3 - 2000 IU daily
Drink enough alcohol to achieve ~0.075 BAC before working on tasks requiring creativity / lateral thinking
