Calm Nervous System 10 Hz
Relaxing Alpha Waves: De-Stress During Studying with 8Hz-12Hz Frequency, Deep Concentration, Alpha Waves for Study,3 mins, 28 secs
- Calm Nervous System 10 Hz
Relaxing Alpha Waves: De-Stress During Studying with 8Hz-12Hz Frequency, Deep Concentration, Alpha Waves for Study,3 mins, 28 secs