Productive - improved mental focus and physical energy
I can definitely recommend the Neurohacker Collective's "Eternus" drink mix. For me, at 5 days a week, or less, the results are at once dynamic and subtle: strong mental and physical energy that feels so right you just want to take it for granted. For me, the formula for success is to combine taking [1] a single Qualia Original Stack Step One capsule, and [2] mixing an Eternus packet of the powder into a glass of water - give it a good stir - and drink it all down. Good taste, great results.