Originally Posted by
caloso
I will grant that you will have some benefit of exercise, but the same? No.
The effect of exercise (training stress, if you want to be technical) is basically effort multiplied by time. If you exert the same effort for a shorter time, you'll have less exercise effect. If you exert less effort for the same time, you'll have less exercise effect. You're getting help (that's the whole point of these things, right?), and so you're not getting "the same benefit of the exercise."
I don't think anyone said it's the same...

In my case it's 70% my effort per Km and 30% less effort by time, as I see it when I use the assist on level 1, which I do 99% of the time.

and... most times I use the re-gen and that means pedaling going downhill too.