My answer would be to make sure to include the F.I.T.T principle (Frequency, Intensity, Time, and Type). I am not completely sure if it is correct so correct me if I am incorrect.
I would be a physicist or way better application specialist without additional training
Relative strength is the amount of strength to body size, or how strong you are for your size. Absolute strength is the maximum amount of force exerted, regardless of muscle or body size.
Answer:
It was actually "weaker immune system". Just took the test and got it right.
Explanation:
All the other answers are short term effects. If you don't sleep for a day, your movements would be slower, you would be more tired and wouldn't be able to concentrate. However, if you just miss one day of sleep, your immune system ain't gonna suffer.