The woods will wait for you
There is a particular kind of tiredness that only trees seem to fix. Not the gym sort of outdoors, with a route and a target and an app counting your steps. Just trees, and quiet, and the smell of the ground after rain.
Late summer is a lovely time to go. The light comes through the leaves in that soft, greenish way, the blackberries are out along the paths, and the whole place is just beginning to think about turning. You do not need to go far. Whatever woodland is nearest to you will do the job, though if you fancy a proper day of it, the New Forest, the Forest of Dean, Grizedale up in the Lakes, or Sherwood are all worth the drive.
Here is the only plan you need: a flask of something warm, wellies (theirs and yours), and no particular route. Let the children get filthy. Let yourself sit on a log for longer than feels productive. There is nothing to see, no landmark to reach, no photo you have to get. That is the point of it.
A forest asks nothing of you. It does not mind whether you are keeping up, or getting things done, or making the most of the day. It simply lets you be there, under the trees, for as long as you like.
Go when you can. The woods will wait for you.