639hz Base Frequency Gamma Wave 3m Journey (30hz to 40hz to ...

639hz Base Frequency Delta Wave 3m Journey (1hz to 3hz to 1hz) For Restorative Sleep, Inflammation, & Healing

639hz Base Frequency Theta Wave 3m Journey (4hz to 7hz to 4hz) For Relaxation, Meditation, Creativity, & Subconscious

639hz Base Frequency Alpha Wave 3m Journey (8hz to 10hz to 8hz) For Calm, Flow State, & Unwinding

639hz Base Frequency Beta Wave 3m Journey (14hz to 18hz to 14hz) For Focus, Critical Thinking, & Productivity