If a job pays for your gym membership, they should give you time during the day to use it. I used to be in great shape before I started this job. I work 11 hours, takes an hour to get ready in the morning, then the commute. When I get off work, the local gym is too packed to even try to work out.
I've become so unhealthy since I started this job and I'm started to get depressed about it.