Sleep quality enhancement

1. Alpha brainwaves vs. theta brainwaves (Nootropic Key Ideas)
2. Alpha waves vs. beta waves (Nootropic Key Ideas)
3. Brain fog vs. mental clarity (Nootropic Key Ideas)
4. GABAergic vs. glutamatergic (Nootropic Key Ideas)
5. Gut bacteria diversity vs. mental well-being (Neuroscience Tips)