Thread
:
Yawning
View Single Post
07-20-2003, 06:41 PM
#
16
(
permalink
)
MSD
The sky calls to us ...
Super Moderator
Location: CT
My chorus teacher in middle school proved to the class that when you hold your mouth wide open, it triggers yawning a lot of the time. That's why it's important to not lock your jaw open.
MSD
View Public Profile
Find More Posts by MSD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73