Healthline says the average person's weight can change by many pounds in a single day. I know it's true for me, I can vary 5 pounds in a single day!
Most people know that their greatest weight is at the end of the day when everything is still in their body.
But for whatever the reason, people tend to weigh the least on Friday morning.
If you like to consume alcohol and lots of food on the weekends, Sundays might be your heaviest weight days.