What is the problem? Do you find your sleep being affected? If so then your doing the right thing by working out before you go to work. If you workout after work it's sunny, and the light that hits your eyes produce tim, and pim protein and cause your circadian rhythum to displace it's internal clock, and you will have trouble sleeping, which causes serotonin levels to change sporadically, causing you to crave sweets or salty foods, or not be hungry at all, but mostly sugary foods will be craved. Only thing you can do is pack, meals, workout before work, and wear sunglasses before you open the door to leave to go home. Have something pre-cooked at home, so you just heat and eat, then sleep.