Today I could come back earlier, so decided to ride for a long time. Riding with the lowest resistance at 90rpm for about 40 minutes, and then I did two medio: 2nd, 90rpm, 15min with an interval of 10min.
What I am worrying about is that the crank length is shorter than that of my road bike. 165mm is 5mm shorter. But anyway, riding it should be better than doing nothing.