Discovery analysed a million people's health habits - here's what they found

South Africans walking 15 000 steps a week can help save the country R6 billion in hospital costs while extending lives, according to a recent study by the London School of Economics and Discovery Health. 

Looking at one million Vitality members from South Africa and the UK over a decade, the study that the person's life expectancy is also expected to increase by two to three years, while their mortality risk decreases by 22%, when walking 5 000 steps three times a week.