I have always insisted on taking off a 24hr period every week.
Six days you shall labor and do all your work, but the seventh day is a sabbath to the Lord your God. On it you shall not do any work, neither you, nor your son or daughter, nor your male or female servant, nor your animals, nor any foreigner residing in your towns. For in six days the Lord made the heavens and the earth, the sea, and all that is in them, but he rested on the seventh day. Therefore the Lord blessed the Sabbath day and made it holy. Exodus 20:9-11
It a false economy to push yourself or your team seven days a week. I’ve seen people work multiple weeks at a time with no bteak. I’ve seen people make mistakes over the weekend that takes them a few days to sort out. I’ve seen relationships and marriages break up due to poor work life balance.
It is never worth it. You never gain from it.