I think (personally) that it's pretty necessary to weight loss to do cardio sessions most days of the week. One of the best ways to do cardio is in intervals, especially if you aren't able to do a whole workout at RPE 7 or 8. Taking a walk is good, way better if you add a few sprint intervals. And especially since this can be done with your choice of cardio activity (you can do something different with it every day, from walking and running, to swimming, elliptical, biking, you name it... ) I think it's versatile enough that it can and should be done every day. Basically, just pick an activity, then add the little bursts of intensity. **Probably a simple "yes" would have sufficed, but I just wanted to explain my reasoning.