Hellow guys, Welcome to my website, and you are watching [집중력트레이닝]10분공부+1분휴식 (6sets) | 1시간집중 | 🪲밤벌레 소리asmr_모래시계 타임타이머 | Relaxing river sounds. and this vIdeo is uploaded by 집중력트레이너 FocusTrainer at 2021-12-04T04:00:08-08:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.