افزایش تمرکز در مطالعه

13:55

8:16

4:10

50:54

11:20

12:56

14:43

21:42

5:07

15:22

9:32

7:51

6:43

6:34

10:04

4:47

8:31

25:29

9:30

13:11

54:13

6:34

12:46

1:06:02

1:00

16:25

12:24

2:02

24:02

15:36

5:16

8:09

1:21

30:14

8:17

5:42

17:12

1:00:04

3:15

10:28

8:42

9:16

9:23

11:23

10:13

15:44

12:12

10:31

00:46

3:31:20

10:00

5:11

1:00:01

1:00:04

8:08

16:09

1:11:11

11:50

9:49

4:26