hello If you are riding to loose kg`s as well as improving ur fitness levels its important not to go to high with ur heart rate. A good investment is a heart rate monitor to insure you not going out of the fat burning range, to high is only going to benefit ur fitness and to low, well, ur not doing much for urself then... you want to stay in the 60 - 75% range. this is the best for fat burning. hope this helps.
