Myth 1: Ab workouts burn belly fat
Fact: you can't choose where you lose fat. In a six-week trial, adults did seven ab exercises five days a week. Their ab endurance improved, but belly fat, body fat and waist size did not change compared with people who did no ab training. Fat comes off across your whole body when you are in an overall calorie deficit. Train abs for a strong core; for belly fat, look at your diet and your total training.
Myth 2: More sweat means more fat burned
Fact: sweat is your body cooling down. How much you sweat depends mostly on heat, humidity and your body, not on how much fat you burned. A humid Subang afternoon will make you sweat more than a hard session in air-con. The weight you lose by sweating is water, and it comes back when you drink. Judge a session by what you lifted, not how wet your shirt is, and rehydrate after.
Myth 3: Lifting makes women bulky
Fact: getting big takes years of deliberate effort. Women respond to lifting well: a meta-analysis found women and men gain muscle and lower-body strength at similar relative rates, and women gained relatively more upper-body strength. But women start from less muscle mass, so the absolute gains are smaller. Building a visibly muscular physique takes years of hard training and eating to grow. For most people, lifting mainly makes them stronger, and how lean they look comes down to body fat.
Myth 4: Drink your shake within 30 minutes or lose your gains
Fact: total daily protein matters far more than timing. A meta-analysis of protein-timing studies found an apparent benefit of protein right after training, but it disappeared once total daily protein intake was accounted for. Hit your daily target first. Eating a protein-rich meal within a few hours either side of training is plenty. See how much protein you need.
Myth 5: Cardio kills your gains
Fact: moderate cardio doesn't meaningfully hurt muscle growth. A 2022 meta-analysis of 43 studies found that adding aerobic training to strength training did not reduce gains in muscle size or maximal strength. Explosive strength (jumping, sprinting) was slightly blunted, mostly when cardio and lifting were done in the same session. If power matters to you, separate hard cardio and heavy lifting by a few hours. Otherwise, cardio helps your heart and your work capacity.