Cool Free High Resolution Desktop Wallpapers for Mobile,High Definition,Widescreen,Fullscreen

sleeping wallpapers

total downloads:2678
download for last week:68
-1    
Hunter
Tags:
total downloads:2575
download for last week:7
0    
Desktopography eat funny sleeping text
Tags:
total downloads:2406
download for last week:10
0    
PC black background minimalistic sleeping summer
Tags:
total downloads:1834
download for last week:63
0    
SLEEPING FAIRY
Tags:
total downloads:1589
download for last week:14
0    
Lavender dreams
Tags:
total downloads:1582
download for last week:75
0    
Cat
Tags:
total downloads:1441
download for last week:61
0    
Cat
Tags:
total downloads:1357
download for last week:2
0    
Cat
Tags:
total downloads:1245
download for last week:15
0    
Cat
Tags:
total downloads:1090
download for last week:19
0    
Cat
Tags:
total downloads:1045
download for last week:3
0    
Sleeping Beauty
Tags:
total downloads:1028
download for last week:8
0    
Cat
Tags:
total downloads:1015
download for last week:14
0    
Cat
Tags:
total downloads:1005
download for last week:5
0    
Cat
Tags:
total downloads:939
download for last week:20
0    
Cat
Tags:
total downloads:928
download for last week:17
0    
Cats
Tags:
total downloads:889
download for last week:27
0    
Family
Tags:
total downloads:870
download for last week:14
0    
Cat
Tags:
total downloads:845
download for last week:2
0    
Sleeping Snow Monkeys
Tags:
total downloads:817
download for last week:12
0    
Cat
Tags:
total downloads:802
download for last week:4
0    
Cat
Tags:
total downloads:794
download for last week:2
0    
Cat
Tags:
total downloads:784
download for last week:6
0    
Cats
Tags:
total downloads:771
download for last week:6
0    
Cat
Tags:

In animals, sleep is a naturally recurring state characterized by altered consciousness, relatively inhibited sensory activity and inhibition of nearly all voluntary muscles. It is distinguished from wakefulness by a decreased ability to react to stimuli, and it is more easily reversed via stimuli than the state of hibernation or of being comatose. During sleep, most systems in an animal are in a heightened anabolic state, accentuating the growth and rejuvenation of the immune, nervous, skeletal, and muscular systems. Sleep in non-human animals is observed in mammals, birds, reptiles, amphibians, and fish, and in some form in insects and even in simpler animals such as nematodes, suggesting that sleep is universal in the animal kingdom. The purposes and mechanisms of sleep are only partially clear and the subject of substantial ongoing research. Sleep is sometimes thought to help conserve energy, though this theory is not fully adequate as it only decreases metabolism by abou...

↑ top
×
Don't forget to join our community!