Energy
It is especially useful with good energy levels and resistance to mental fatigue when you need to maintain peak productivity during long work days.
Top 5 Nootropics
The following are nootropics for improving energy that have the most promising evidence.
How to measure your energy
The following are psychological tests that can be performed to measure specific aspects of energy. Some of these tests may also measure things other than energy. Under each test there is a list of data points that can be collected from the test. We have marked the specific data points that you can use as measures of energy.