Hellow guys, Welcome to my website, and you are watching ๐Ÿคฃ๊ธฐ๋ถ„์ด ์ข‹์•„์ง€๋Š” ๋‡ŒํŒŒ๋ช…์ƒ | 10 Hz ์•ŒํŒŒํŒŒ - ํ–‰๋ณตํ˜ธ๋ฅด๋ชฌ, ์„ธ๋กœํ† ๋‹Œ์˜ ๋ถ„๋น„ ์ด‰์ง„ | 10 Hz EEG - Happy Hormone (Serotonin) Release. and this vIdeo is uploaded by Beautiful Lullaby Korea at 2021-02-19T17:15:00-08:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.