If you're trying to get in shape, the first question you have to answer is also the most important: When should I work out? Let me answer it for you right now: You should hit the gym in the morning before work. Seriously. Take it from me. I tried everything else under the sun, and if you're anything like mesocially-active, professionally-engaged, time-challengedit's the only way to fit a consistent workout routine into your already over-scheduled week.
It's nice to get it out of the way in the morning. However, if one has an extremely flexible schedule, I've read the best time for the body to exercise is around 3-4 pm.
yeah you would have to be very flexible to get it in around 3-4pm, thats right in the middle of the day... its whatever works for you