Tim..feeling pretty good..had house to myself last nite and had music cranked up.. I could of went probably 10~15 minutes more but didn't won't to overdo it..lol.. I like to keep at least the first 'endurance' light lit up during the entire workout.. showing rate of about 50~53 revs/minute..
I'm going to do some calculating today if I get a chance.. for my own curiousity.
Just glancing, and all things being equal..(based on for example 1600revs/30min for each..) it looks like resistance 5 uses maybe 10+%~ more calories than resistance 4.. resistance 4 uses 10%~ more calories than resistance 3..
I KNOW each resistance step is definately HARDER.. Resistance 10 will probably feel like standing up pedaling a bicycle up a grade while doubling a full size person on the back.. now it just feels like I'm doubling a 50lb kid.. (I personally think of resistance '5' as a '50' lb load..)