5.7 Intervals & Rest Periods (WSF Rules of Squash, Rule 6)

Between games: 90 seconds maximum (Rule 6.1); Prior to the fifth game (if applicable): 120 seconds maximum (Rule 6.2); Intervals begin when the previous game ends. Players must be ready to resume at the expiration of the interval. Failure to be ready may result in a Conduct Warning.

Source: Rule 6.1, Rule 6.2

Send this to your friend — argument over.