Most people tell me that exercising makes them feel good, energized, and allows them to sleep better at night. I seem to experience the exact opposite. When I exercise, I get extremely irritable for the rest of the day. My energy level drops drastically, my depression and anxiety get a little worse, and I can't sleep at night. A few years ago, I thought that maybe if I just worked through it and kept at it, all that would go away, but after exercising for six months, I still experienced all the same symptoms. I recently started exercising again and have found that the same thing is happening, but it seems to be even worse. Just some background: I am 6 ft tall and 155 lbs. I have a very high metabolism. I take Zoloft for anxiety and depression, fish oil, and a B complex, I only drink one small cup of coffee a day and smoke about a half a pack, to a pack of ciggs a day. Normally I eat three squares a day and at least one snack. When I work out, I will have to eat about twice as much as normal to avoid feeling like I am starving. I'll drink water and piss it right out almost immediately, and stay feeling dehydrated. Yesterday, I did some light cardio. It was the worst day ever. I was extremely irritable afterwards, extremely hungry and thirsty to the point that I was almost shaking. Even though I ate a shit ton of food. I usually go to bed at about 10:00 pm, but literally couldn't sleep and didn't get there until about 7:00 a.m. this morning. So, if anybody has any feedback or advice on what may be going on here I would be very grateful. For the time being, I have abandoned my exercise routine.