According to the NHS, coronary heart disease (CHD) is the leading cause of heart attacks, and your chance of developing it is increased by: smoking, a high-fat diet, diabetes, high cholesterol, high blood pressure (hypertension), and being overweight or obese.

Bob Harper admits he was 'really close' with his fellow 'Biggest Loser' trainer 'on television,' but where do they stand today? See what he said!