5 hours of exercise a week, you'll get a powerful athlete's heart

For the first time researchers have found that regular exercisers show the same beneficial changes to the heart as those seen in endurance athletes.

Individuals who work out for just a few hours a week could benefit from an enlarged heart, a phenomenon previously only recognised in athletes, according to a new British study.

The research also provides important information for doctors who could be mistaking an enlarged heart resulting from exercise, known as "athlete's heart," for a heart condition.