I want to exercise by riding a bicycle in my small neighborhood. Do I need multispeed or one speed?

Question

When I search for a adult bicycles they are mostly multi-speed and I am wondering if that is really necessary. Can I get just as much of a workout with a one speed?

Answer 1

No you can't and the reason why is that even on level ground multiple gears give you more of an opportunity to  get  a serious workout in b/c you can vary how hard you want to work simply by shifting gears

If lowest gear on your rear wheel has 14 teeth on it  and the biggest gear on the ring by your pedals has 52 teeth on it  that means that every time that you go thru 1 complete revolution of those 52 teeth  your rear tire will have gone thru  3 .7 revolutions and you will be working really hard

If the highest gear on your rear wheel has 32 teeth on w/ your pedal gear remaining the sameyour rear wheel will have moved thru 1.625 rev

The pedaling will be a lot easier and you will be able to go a lot faster

If the second largest gear ring by your pedals has 40 teeth on and the gears on your rear cassette remain  the same then

1 complete turn of those 40 teeth will yield 2.85 turns of the rear wheel in the lowest gear and 1.25 turns in the highest

Good luck

Answer 2

I would go with gears, then you can go up hills without dying.