When I was considering using Clenbuterol for cutting I remember coming across a blog of this girl documenting her experiences with the drug. She had started out at 20mcg but made no lifestyle changes so obviously she wasn't losing weight because even a drug like that isn't sorcery, calories in/calories out is still a thing. So in four weeks she had upped her dosage to 200mcg a day and was having serious side-effects (as you'd expect) but still not losing weight. This girl was willing to take so much clen that she had serious heart palpitations and hand tremors, eye twitching and risked liver and heart damage but wasn't willing to stop eating cupcakes or lift a dumbbell.