I would barely feel anything at that dose and it would be incredibly short-spanned; more like cocaine. It's literally 75% of the dose for ~20% of the effects.

Besides, if you would have read the article - they are mentioning dosages of 125mg.

I would also be confident enough to say that MDMA is not as linear in dosages against body weight and _almost_surely_ it depends way more on your digestive than your body mass.

PS: to be clear, I did this with people who were multiples of my own weight (68kg) and incredibly petite ladies who were smaller than me. Dosage has little correlation with the effects they would get.