=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 200 OK
Server: Apache
Vary: Accept-Encoding
Access-Control-Allow-Origin: *
X-Libsyn-Host: we4
Content-Type: application/rss+xml; charset=utf-8
last-modified: Tue, 18 Sep 2018 19:34:06 GMT
Date: Mon, 24 Sep 2018 06:52:29 GMT
X-Varnish: 1338353128 1030175309
Age: 472698
Via: 1.1 varnish
Connection: close
X-Libsyn-Proxy: wp1
X-Cache: HIT

Request headers
================
HEAD /rss HTTP/1.1
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Host: sothisisfitness.libsyn.com
Accept: */*
Referer: http://sothisisfitness.com
Connection: close


Link is valid.