I think you're confusing weight loss with changing body composition.
If you think about the average person. their TOTAL weight is composed of many things.
Bones, skin, hair, organs, muscle and fat are among them. In an "average" person (male)
18-24 % of the total weight is fat. 30-35% muscle.
Now if you just want to lose weight, Diet and cardio will burn fat and get you there.
If you want to get stronger, improve performance, look more athletic.... Cardio, diet and resistance training will get you there AND will change your body mass composition.
An average guy weight 200 lbs
if 20% is fat and 35% is muscle then 40lbs is fat and 70 is muscle.
If he loses weight he'll have 30lbs of fat 70 of muscle and weigh 190
If he changes body comp by lifting and diet...
the same guy will still weigh 200 lbs
but now 15% fat 30lbs and 40%muscle 80.lbs
Hope this makes sense.
