bicycle for weight loss, non statinary

So my wife and i got road bikes and we are just starting to ride them, is cycling a good way to loose fat but retain muscle. We ride mostly on flat surfaces but there are a few hills here and there, i would rate intensity 7 out of 10...just wondering if this helps other people alone as cardio to loose weight. We still hit the gym daily.



Thanks in advance.

bicycle for weight loss, non statinary