why do we yawn when we are sleepy

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
why do we yawn when we are sleepy	0.17	0.7	843	87	33
why	0.56	0.3	62	1	3
do	0.12	0.8	8271	96	2
we	0.15	0.4	7166	23	2
yawn	1.87	0.1	1593	63	4
when	1.36	0.1	5939	30	4
we	1.4	0.8	3971	81	2
are	0.94	0.7	1219	99	3
sleepy	1.5	0.6	6062	98	6

Keyword	CPC	PCC	Volume	Score
why do we yawn when we are sleepy	1.92	0.8	1815	77
why do we yawn when we are sleepy or drowsy	1.8	0.3	6622	84
why we yawn when we are sleepy or drowsy	1.03	0.4	2932	46
why we yawn when we are sleepy	0.47	0.5	9836	52
why do we yawn when we feel sleepy or drowsy	0.61	0.5	3183	59
why do you think we yawn when we are sleepy	0.59	0.6	9411	75
why do we yawn when we feel sleepy	1.58	0.5	6260	61
do we yawn when we sleep	1.71	0.9	5527	90
why do we yawn when tired	1.98	0.7	8994	86
why do people yawn when i yawn	1.21	0.9	705	7
why do people yawn when tired	0.11	0.6	9054	71
why do people yawn when they're tired	1.92	0.3	9868	63
why do we yawn all the time	0.95	0.6	4908	15
why do people yawn constantly	1.84	0.3	6954	73
why do you yawn constantly	1.57	0.8	1769	78
why do i yawn during the day	1.37	0.7	6637	3
do people yawn when asleep	0.95	0.8	9150	53
do people yawn in their sleep	1.37	0.2	9279	81
constantly yawning and sleepy	1.1	0.3	1130	47
causes of yawning and sleepiness	1.87	0.4	8084	7
yawning in your sleep	1.53	0.7	8361	3