Drug info - Weight Loss With Ecstasy use

[bizarre]

SWIM noticed that when he popped two nights each 4 days apart and would wake up the next morning with significant loss of fat in the waist but cannot understand how he lost any fat that night since he did not do an intense workout with ecstacy.
Is there any explanation or has anyone that you know experienced this after the use of ecstacy? SWIM understands that long term use can cause this but it was nothing like that, these were results after 2 uses.