Ok, so here is my situation. In high school i was a very fit and active person. I went from weighing 235lbs to 170 my senior year. I would walk at least 2 hours a day and bike another one hour. I did very little weight lifting but was able to stay fit. One year after high school discovered I had a heart condition known has wolff parkinson white syndrome which is a heart condition in which there is an abnormal extra electrical pathway of the heart. The condition can lead to episodes of rapid heart rate (tachycardia) and for me often did. I had to stop all physical activity until i had a corrective operation to fix the problem. This was in 2007 when i was 19. Since then there has been no sign of the problem. However has one might imagine having something like this happen to a person can have negative side effects. The main one being that i have since developed panic disorder and have become a hypochondria when it come to my heart. Anytime it starts racing i think something is wrong or i'm going to have a relapse. With this background information let me inform you all of my current state. I am 25, 270lbs (the largest i have ever been) and lead a basically sedimentary life. I currently don't work and won't be going back to school till September. My days right now are wake up and watch TV for hours, eat fast food two times a day and do nothing and i am sick of it. I know i am heading towards a bad future if this continues. I have made some changes for the better in the last few months and am ready to start exercising. I smoked since 2005 regularly and have completely kicked it cold turkey in June 2012 and will never smoke again. I have reduced my alcohol intake from about 24 beers a week to none-3. And i for the past two days have had no fast food and refuse to eat it again. If i can quit smoking i think i can do that has well. So luckily my apartment has a gym facility with a bow flew and some running machines. has well has free weights and a pool which should be opening soon. I intend to use all this free time there and trying to improve myself and need some advice and knowledge has to were to begin. I went today for the first time and logged 45mins there. Twenty on a elliptical machine and the rest lifting weights. I am very weak feeling, my arms feel like there gonna fall off, a bit nauseous, and winded. Is this normal to have all those or am i that out of shape? how much should i start with? how would you recommend i change my diet (currently thinking about vegetarian) and how long before i should start feeling better or less ill when im done working out? any advice would be great and i appreciate everyone's input in advance. Thanks!