Im on my day 2 of quitting. I feel really good. I have a lot more energy. Yes I have a headache and I can't concentrate at all but physically I feel so much better. I'm 6 feet tall and weigh just over 14 stone so I always thought the reason I get breathless when riding my bike to work was coz I'm a big guy but today I rode 5 miles in high gear and didn't get breathless at all !
I feel stronger, more energy more stamina. I can't describe it. Feels great.