I always hated running, but months of nagging by one of my colleagues (who does marathons) I started doing it, but keeping it short and slow for now.

My first jog was like 500 meters, and I was exhausted, but I've did like 20 more sessions since then, and I see a steady increase of distance I can go before I reach my first point of exhaustion.

Now I can go 1000 meters, and recover faster, and I even feel slightly generally better during my everyday life.

Since I'm not pushing myself too hard, it is actually kind of enjoyable and even though I do not have a regular routine, never before I had the spontaneous urge to jump up from my chair at the end of the workday and go running with a smile on my face.