CARBOHYDRATE INTAKE, HORMONE PROFILES ,<span>TRAINING VOLUME ,GUT HEALTH ,QUALITY OF PROTEIN, AND CALORIE INTAKE</span>
When it comes to losing weight it has to do more with your diet(what your eating). "70% on the kitchen and 30% in the gym"
crunches and planks don't burn a lot but you would get muscle in your core.
do things like cardio (running, swimming, biking) that burns a lot of calories