They are twins. They play together, go to school together, compete at finishing breakfast- basically all the regular stuff that brothers do. 

This video, released by Special Olympics on April 10 to mark National Sibling Day, tells the story of two twins and how the bond between them grows stronger as they grow up. 

One of them has Down Syndrome. 

However, as the video tell us later, the only difference between them is that they were born 4.36 seconds apart. 

Titled Born Apart, the video, which has got nearly 70K shares at the time of writing this piece, has received hundreds of comments from mothers and fathers and brothers and sisters of those with disabilities stating how they were moved by the video. 

Amber Broussard, sharing a picture of her twins, wrote, "This touched me to the core. These r my twins. Blythe and Briggs. She has trisomy 21. He doesn't. Didn't know till they were born. I wouldn't change anything!!!" (sic)

Amber Broussard

Kendra Miller Ely too shared a lovely photograph of her children saying, "This video hits home in so many ways!!! Only 4 minute separates these two nuggets!"

Kendra Miller Ely

"My twin brother AJ suffers from low functioning autism. We're both 24 and only a few minutes apart (he pushed me out since I was only 3 pounds #premielife). I can't believe a story like mine has been told on such a national scale! Love you Special Olympics! I'm seriously crying :')," Nicole Lopez wrote.