Walking is an accessible way to increase your weekly activity levels, writes Harry Bullmore . But teh science around how many steps you need to do is changing all the time. Here is the easy way to significantly improve your wider fitness in 15 minutes a day. W alking 10,000 steps a day is no bad thing, but it isn’t the health and fitness panacea it’s often made out to be either. The body doesn’t have an in-built pedometer which releases untold benefits when you hit five figures for the day.