Add spaces: Whenyoubuyatreadmill,chooseamachinefromthespeedsothatenoughrangeremainstowardsthepre-setmaximumspeed.Hence,youcanincreaseyourperformancewithoutpermanentlyusingthemachineatfullspeed.
When you buy a treadmill, choose a machine from the speed so that enough range remains towards the pre-set maximum speed. Hence, you can increase your performance without permanently using the machine at full speed.