An example of nonsense

"After up to eight weeks of intensive cardio training three times a week, people experience no significant change to their weight or BMI if their diet stays the same, a a study found.

Yet, among those who are obese or overweight, their so-called 'hunger hormones' are significantly altered, with researchers believing an increase in appetite may undo any weight-loss effects from exercise. "

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Let us look at the first sentence.

Intense cardio training. This burns more calories than not doing it. 

Diet did not change.

Therefore weight MUST have been lost unless muscle increased. Let's say muscle increased and that by complete coincidence matched - in terms of weight - the calories burnt.

Let's look at the second group.

Calories were burnt but were replaced by eating more. OK that's believable but why after eight weeks did they not build any muscle mass at all. If they did, taking into account the first sentence, their weight would have risen.

See the nonsense?