^^ You sound like my son Tonkin. He lives for the gym these days. A workout obviously has huge benefits not only on physical health but mental health too. Plus it's a good place for a little social interaction.
@ Kooky Monster - Ah was it my silent reflux that you diagnosed?
It could be a pinched nerve that is causing all this pain, so I certainly wouldn't rule it out. You are better than my GP Dr Kooky, but that's not saying much