...But suddenly I feel tired and a? feverish. I havent quit walking as I want to stay on my plan. I eat a salad and bowl of fruit for lunch everday, and a small dinner. I have 3 cups of coffee in the morning and yoguart. I was walking 3 days a week 2miles in 30 min and this week addded the 4th day. this is the only change. So what is going on? This happened last time I tried to start and excersise program so I quit. I dint want to quit again. Oh I also to arm exercises when I walk and sit ups 3 days a week to build muscle.