Whatever makes you feel great.

I am kinda in the same boat (but I do not write articles), spending most of my free time either learning or developing.

Frankly, I love it. It makes me happy, so why change it? If I feel burnt out, I usually switch to something else for a short time, but I can mostly switch between reading/coding/watching tech influencers.

So if you do not feel unhealthy (exercise can always help to take a natural break anyway), keep on learning and developing :)