If there's one thing Jurgen Klopp loves, it's rhythm.
And that goes a long way to explaining why the Liverpool boss has been so reluctant to tinker with his starting line-up in the Premier League in the past few months.
Injuries aside, Klopp has been keen to primarily stick with the tried and trusted during a run that has moved the Reds to within four wins of claiming a first title in 30 years.
But as a key period approaches in Liverpool's campaign, rotation will now come to fore with their Champions League and FA Cup hopes on the line over the next fortnight.
The fixture schedule, then, could prove helpful.
Coming up in the Premier League are Watford away, followed by Bournemouth at home and then Everton away.
And it was during the reverse fixtures back in December - when Everton's visit was followed by a trip to Bournemouth and a home game with Watford - that Klopp last significantly shuffled his pack in the top flight.
The last time Mohamed Salah, Roberto Firmino and Joe Gomez failed to start a league game was in the 5-2 win over Everton.
It was also the only league game Jordan Henderson didn't start before his recent hamstring problem.
A few days later at Bournemouth, Trent Alexander-Arnold was benched for the only time in the top flight this campaign, although he was pressed into action before half-time due to an injury to Dejan Lovren. Sadio Mane was an unused substitute.
And the next weekend, the Anfield clash with Watford saw Andy Robertson benched for the only time in the Premier League campaign, the Scot coming on for the final half-hour.
During that intense period, Liverpool had to negotiate a Champions League group decider at RB Salzburg and then flew out for their successful FIFA Club World Cup campaign in Qatar.
Now, with an FA Cup fifth round tie at Chelsea on Tuesday followed by the Champions League round of 16 return at home to Atletico Madrid eight days later, Klopp is in a similar position.
Adam Lallana, Joel Matip, Takumi Minamino, Divock Origi and Lovren, who have just two Premier League starts between them in the last 10 games, will all be hopeful of being given a chance in the top flight.
Given Liverpool's mammoth lead at the summit, there's more than a little room for manoeuvre in the forthcoming Premier League games.
The treble is on. Will Klopp be a chancer with his team's rhythm?