If you want to run your first marathon i

<p>When Ben Elton didn’t distract from the pain of moving my body, I found the perfect solution – the interactive smartphone game Zombies, Run!</p><p>At 56, I am running my first marathon, an old, fat, bald dad surrounded by millennials in body-hugging Lycra and smiles that look AI-generated. But I am ahead of them. For they are only competing for positions and personal bests, and I am being chased by zombies.</p><p>The black dog of depression hit me around the time