1:03:11

iFocus Online, Session 38

59:01

iFocus Online, Session 21

1:14:17

iFocus Online, Session 40

19:46

Trump on Upholding Constitution: "I Don't Know" | The Daily Show

25:47

Harvard Professor Explains Algorithms in 5 Levels of Difficulty | WIRED

3:11:07

Musica Relaxante para Estudar e Trabalhar com Ondas Cerebrais 3 Horas

2:00:00

[ 40Hz ] GAMMA Binaural Beats, Ambient Study Music for Focus and Concentration

55:32

iFocus Online, Session 23