I'm fairly sure that's not how sleep debt works and part of the reason its a faulty name. The idea of sleep debt more refers to the long-term effects of a lack

I'm fairly sure that's not how sleep debt works and part of the reason its a faulty name. The idea of sleep debt more refers to the long-term effects of a lack of sleep on your overall health. So if you skimp on hours of sleep during the week but then make them up during the weekend you might feel okay on Sunday, but you have actually physically harmed yourself in some minute way - you have created a sleep debt that you essentially cannot repay.