Read the text and answer the question.
How sleep transformed professional football
A few decades ago, professional footballers spent their
nights partying. Now, they are much more aware of the
benefits of a good night’s sleep.
The change began in the mid-1990s, when mattress
salesman Nick Littlehales contacted the manager of the
Manchester United football team, Alex Ferguson, asking
whether he had ever considered how sleep affected
performance on the pitch. Interested, Ferguson arranged for
Littlehales to give a presentation to his team.
Gradually, club managers began to pay more attention to
scientific sleep research, and for good reason. (...)
Now, many teams and players are making an effort to
improve their sleep patterns, using various means. James
Milner from Manchester City found it hard to sleep after
evening games, so would play computer games into the early
hours. As a result, he was too tired to train the following
morning. Since these interventions are cheap and effective,
even the less well-known teams can benefit. (...)
Whereas in the past, playing after a party and a few
hours’ sleep was seen as a badge of honour, a good sleep is
now considered an essential part of performance.
Adapted from https://test-english.com/reading