I've been using the static bikes in the gym i've recently joined. They have a resistance level of 1 to 40. I've tried all the levels and level 5,level 10,level 15,level 25 and the maximum level 40 are the ones i like to use. I don't like 'spinning' as i find the pedals tend to run away from me,so grinding is my choice of pedaling. I do go through the different levels in the hour to a hour and a half i'm on them. I tend to use the higher levels most,while using the lower levels to cool down. For the last two nights i've done something some might say will harm my joints. I've stood on the pedals for half an hour with the resistance at the maximum level. On looking at the screen my cadence averaged 26 rpm and my average speed was 16.5 mph. This is by far the highest average i've had on a static bike. I usually average about 11 to 13 mph. Ive tried half an hour at level 15 and my average speed was around 12 mph. I've also noticed the watts level at the lower resistance levels is much lower than than when i'm at level 40. My watts output at level 40 is around 140,whereas at level 15 it's around 80. Surely more watts output means it's better for the cardiovascular system? This leads me to my question. If a low cadence isn't as good as spinning,how come i can go faster and go further on a very low cadence?