It's okay if the project is going through an especially busy time and it's for a brief period.
A manager of mine proposed to set up progress meetings on Mondays, Wednesdays and Fridays between 8am and 8:45am on a long-term project when there were already 3 days where I had to hold meetings with senior management between 17:30 and 19:00.
This would have meant that mine and the teams working days would have been 11 hrs, 3 days a week for 12 months and 50% of my team would have had to start travelling at 4:30am on the Monday.
I was the only person out of 12 people in the room to speak up and question it. The result was that we had the meetings twice a week between 5pm and 5:30pm, and emailed MI to the manager on a Monday and Friday (which we would have had to create to support the meetings anyway). This worked perfectly well.