If we get tired after working all day, then it’s reasonable. But if we just woke up from a very long sleep on a Sunday and still tired, then it’s a different story. That’s why I prefer weekdays over weekends, since I have no excuse if ever I will feel the same. If our body is used to work at anytime of the day, the day of the week does not matter. Although once in a while our body needs rest, but so much time to rest will just bore us to death. It’s the boredom which makes us feel tired and not the work or the stresses in life.