I know that working out helps the body out during stressful times. I've experienced myself this, after being stressed at work, hitting the gym 'releases' the tensions, specifically in my forehead (that area hurts and feels like there's pressure in it).
I've noticed that this seems to work only when my stress is caused by frustration (ex. arguing, unforeseen issues, mistakes due carelessness). However, lately, causes of stress has dwindled down to too much work, or perhaps overwork (like there's so much to do, after completing one development task, another is waiting) and no so much frustration. I tried to go to the gym but it seems it doesn't improve my condition so much, it just feels like I'm really tired.
My question then, is that the second cause of stress I mentioned above, getting some rest rather than hitting the gym maybe a better idea?