Ed Ritchie from the "cross between a solo project and a band" told RealSoundsOK about the song.
He said: "A close friend of mine is a sprinter and I'd often hear him talk with other athletes about their PBs (personal best times etc.).
"The song itself was inspired by bus commutes during rush hour. Most of the other songs from the forthcoming EP began on those journeys to and from the outskirts of Edinburgh.
"Funnily enough, Personal Worst is one of the more upbeat songs I've written! There's a melancholy b-side to redress that balance."
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