Walking may seem a strange activity in business, although I have had walking meetings before now, and I happy to do coaching while walking.
Mens sana in corpore sano, as they say. Mental effectiveness is much more difficult without physical effectiveness. Walking is an activity that can carry on into old age and can be done in town or country without technical equipment. More importantly, there is some evidence that walking in nature acts to lift the spirits, something that lawyers sometimes need.
And one of the joys of walking is that it can be built into your daily routine, such as by taking the stairs rather than the lift.
Lastly, walking can be a social activity. If you can persuade them, it can even be a chance to talk with your teenagers, something else that busy lawyers do not always find time to do.
If you want to do some good by walking, you can always join in something like this. (Other walks for other sexes are available).