=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 301 Moved Permanently
Server: nginx
Date: Mon, 24 Sep 2018 15:57:40 GMT
Content-Type: text/html; charset=iso-8859-1
Connection: close
Location: https://charlesduhigg.com/wp-content/uploads/2012/04/How-to-Change-a-Habit.jpg

HTTP/1.1 200 OK
Server: nginx
Date: Mon, 24 Sep 2018 15:57:40 GMT
Content-Type: image/jpeg
Content-Length: 480405
Connection: close
Last-Modified: Thu, 11 Feb 2016 15:06:44 GMT
ETag: &quot;75495-52b7fe613420d&quot;
Accept-Ranges: bytes

Request headers
================
HEAD /wp-content/uploads/2012/04/How-to-Change-a-Habit.jpg HTTP/1.1
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Host: charlesduhigg.com
Accept: */*
Referer: http://sothisisfitness.com
Connection: close


Link is valid.