HELP ME FRIENDS... PLZ.....

HELP ME FRIENDS....
 hello friends , please help me solve this riddle.. this would be very very helpful for me.


 Each morning I appear
To lie at your feet,
All day I will follow
No matter how fast you run,
Yet I nearly perish
In the midday sun.

anyone who knows its answer please comment....

thanks. i'm waiting for your answers....... 

THANK YOU....


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