hey! I spin a couple of times a week. I also did it when preggers until I was about 7 months gone and bump kept knocking off the handlebars in the standing tracks
the great thing about it is that you can adjust the resistance to suit how you’re feeling on any given day (so long as there is still enough resistance on when you’re pedalling fast to protect your knees).
it’s great for fitness and mood- I really feel like I’ve achieved when I’ve done a class. I’m not sure it alone will shift the pounds, and that’s not what I use it for. However, after a punishing class, I always feel a bit sick/ giddy and tend to make better food choices than I might otherwise make at lunchtimes.
For burning fat, you need some kind of resistance training- weights, body pump, something like that. That shit shreds you.