Got up this morning to the same weird chest stuff, but my pulse and heartbeat are normal. Even went to get a second EKG from SHS and it was normal. It might even be heartburn brought on by stress of Wednesday and yesterday. So far still alright. If it doesn't improve soon I may have to take my off-week next week... Ran what I assume was 4 miles because I didn't wear a watch, I figured the watch would make me focus on the pace rather than how I was feeling.