Whether you're a regular person who plays five-a-side with their friends once a week or a seasoned professional who's been doing it for 20 years on the biggest stage, when your time's up, you know it.
Maybe you're not able to walk straight for a week after playing as your muscles are tighter than a butcher's knot, perhaps your back goes when bending down to pick the ball up out of the net or, in Gary Neville's case, you've been given the run around by Peter Odemwingie and Graham Dorrans for 71 minutes. How can you ever come back from that?
Well, the answer to that is with great difficulty, as Martin Demichelis discovered during a Manchester derby in March 2016. While both sides weren't enjoying great seasons by their lofty standards - City were fourth, United sixth - as Leicester City took advantage and pulled off the underdog story of a lifetime, the stakes obviously remained incredibly high. Nobody told Marcus Rashford.
