If the player is a professional, then I think the gaming session should last at least 8 hours, and this should be 5-6 days a week. And if the player is an amateur, then everyone should choose for themselves. I am currently an amateur, and I can play for 3-4 hours a day, and about a week ago my gaming session lasted 12 hours. Now I don't play at all, I decided to take a break and do other things. It all depends on what goal the player sets for himself and what he wants to achieve in the field of poker.