Ten fitness myths, busted.

Building large muscles takes years of deliberate training and eating. Lifting mostly makes people stronger and leaner.

Tone is muscle plus lower body fat. Challenging weights build the muscle; diet reveals it.

Hard work helps; pain is a warning. Soreness isn’t a measure of a good session.

Sweat is cooling. It reflects heat and humidity, not fat loss.

Sensible amounts of cardio don’t stop muscle growth for most people, and help recovery and health.

Fat loss happens across the whole body. Crunches train the muscle underneath.

Benefits level off around 1.6–2.2 g/kg for most lifters.

Meal frequency matters little for fat loss; total intake does.

Warm-ups help, but load management and strength matter more.

They are different tissues. Muscle can shrink and fat can grow, but one doesn’t become the other.