[nihaar]

Agreed on the cons. I've tried this as well for a while and it does require a huge change in lifestyle. My gym time was cut down to nothing as I would usually get up and hit the gym prior to work (going to the gym in the evenings is very tough for me).

So although my sleep time was the same (I was still going to bed and waking up at the same time as before), by taking out my gym routine, I was actually feeling more tired, down and otherwise less alert. So I've been playing with alternating work/gym during the weekday mornings.