Should freelancers work 40 hours a week or less?

[Btaliat]

It is not necessary that freelancers work for 40 hours in a week. Freelancers should have flexible ways by which they can work. If they have higher rate and can meet up with their target in less than 40 hours, they can work for less than that. They need to be working based on their ability to prevent burning out. However, if working for 40 hours can make them achieve their aims without getting burnouts, nothing stops them from working like that.