Fernando Alonso is concerned by the added stress F1's record-breaking 2024 calendar could create for team crew.
The sport's schedule has rapidly grown since the Aston Martin driver's debut in 2001, when 17 races took the calendar between March and October.
But with the return of China and Imola for next season, F1 will finally hit its target of completing a season past the previous record of 22 races - which the sport is running to this year.
Interest in F1 has grown exponentially in recent years with record attendances at circuits across the world, with new destinations eager to add their names to the calendar.
Whilst the sport's hierarchy is keen to add the emerging destinations to the schedule in order to capitalise on revenue and to instigate further growth, classic venues are seen as vital to ensure the loyal fanbase do not become disillusioned with the direction being taken.
We cannot complain
"It is difficult," Alonso told media, including RacingNews365.com, when asked about the calendar congestion ahead of the British Grand Prix
"I understand all the benefits of having 24 races and the reasons behind doing so many races.
"There's a lot of interest in Formula 1 and demand, so it is good to go to new countries and races - this year it is going to be Vegas, a few years ago it was Qatar and it is great to open the sport to new countries.
"There is more revenue for everyone, so I understand that. But I think for team members, 18 I think is a good number.
"More than 18 or 19, you start stressing all the mechanics, the media - everyone is on the backfoot from February to December.
"We drivers have all the comfort and they try to take care of us as much as they can so we cannot complain too much, but I understand it's hard for everyone else."