Originally Posted by AnthonyG

You have run out of Magnesium. Magnesium is a muscle relaxer, it relaxes you enough to sleep and its required to burn fat. All your training and fat burning has used up your bodies stores of magnesium and you won't move on from here until you get your magnesium levels back up. Taking magnesium can be sometimes problematic because it leads to loose bowel movements which sometimes is desirable but not often. Take some magnesium up to bowel tolerance and back off a little.

Regards, Anthony