Hello all. Im having trouble trouble improving my general performance on my bikes. I commute everyday on my Rockhopper around 15 miles each day. No matter how hard i push i cant raise my average speed, and still feel the same amount of fatigue when i arrive at work or home. I dont bother monitoring my weekend rides as i see them more as fun thing. I have obviously improved since i first stated riding to work 18 months ago. reduced body fat and muscle mass up. But last couple of months no improvement of performance on the bike. Im 31, 6ft, a toned 14 1/2 stone, ex smoker for a year, eat healthy, football twice a week, have a few beers of a weekend and in general good health. Any ideas anyone or have i reached my personal peak fitness brick wall.