As a remote worker, I have decided to give up on walking - it takes up so much time that I conclude that is suitable exercise for rich people only. Furthermore, three months of the year here it is too hot to walk; six months, it is dark by the time I am freed enough from work to go walking; and trying to get a worthwhile walk in before work is too time-consuming and potentially sleep-depriving.
Therefore I have decided to go to our local gym, less than ten minutes' walk from where I live and work, 2-3 times a week, and to commit to hiring a trainer, because I will either achieve nothing alone or else I will injure myself.
It creeps up on you, the extent to which this isolated working life can run your body and mind down into the ground, until, as in my case, it even threatens the things you hold dearest.