How fast is your metabolism?

That’s how many kilojoules you need a day without allowing for physical activity and exercise. If you add these in, you’ll need 30–50 per cent more kilojoules. But if you’re not active and are taking in more kilojoules than your BMR, you’re probably putting on weight. Boosting your lean muscle mass through strength training can increase your BMR so you burn kilojoules faster, even at rest.