Zumba calories burned... weight loss?

aeroback

Ok.... I have been doing my zumba straight with 1 day off for 2 weeks. Burned anywhere from 616-927 during the sessions (depending on class). Seems like scale should be moving but hasn't.

1. Is it fluid maybe? Had this problem a couple of weeks ago and went up 3 lbs then back down within 2 days.

2. Haven't gone over calories without exercising but have eaten most of the calories burned back (and sometimes still had 200-300 left over for the day).

Any thoughts? Thanks