I am cycling to work 3-4 times a week, it is 30km from my home so consider it a very good workout.
Together with some other exercises i am trying to remove fat from my arms. https://bеtterme.world/articles/10-effective-exercises-to-remove-arm-fat-in-2-weeks/ - that is one of the best articles i found on this matter. After 2 months i can clearly see some results in the mirror.