Doing targeted exercises like sit-ups does not lead to more fat loss in the abdomen than doing full-body workouts, because fat loss across the body is controlled by overall energy balance, not by which muscles are being worked.

If you burn the same number of calories overall, doing both strength training and cardio does not lead to more fat loss in specific areas than doing cardio alone.

Exercising a specific muscle group increases blood flow and fat breakdown in that area, but it does not lead to greater fat loss from that area unless the body is in a state of overall calorie deficit.

Exercising a specific body area increases fat breakdown in that area, but this does not lead to noticeable fat loss there because the released fatty acids are often taken up by nearby muscles or tissues instead of being burned for energy system-wide.

In individuals with elevated body fat stores, resistance training during a caloric deficit can sustain muscle hypertrophy while promoting net fat loss.

When people reduce their calorie intake and do strength training, a greater share of the weight they lose comes from fat rather than muscle.