Should 15,000 steps a day be our new target?

It has been almost 70 years since a publication tracked heart health of London bus drivers and conductors

Taking 10,000 steps per day is often suggested as a desirable exercise goal for people who wish to improve their health. But a new study of postal workers in Scotland suggests that that number could be too conservative and that, to best protect our hearts, many of us might want to start moving quite a bit more.

It has been almost 70 years since the publication of the London Transit Workers Study, a famous work in which researchers tracked the heart health of London bus drivers and conductors. They found that the conductors, who walked up and down bus aisles throughout