If you lie in bed for eight hours, you may have rested, but you can still feel exhausted the next day.
2018年12月六級真題（第一套）閱讀 Section B
They argued that her causal-sounding claims rested on correlational data, and that she had not adequately accounted for other potential causal factors.
2019年12月六級真題（第一套）閱讀 Section B
柯林斯高階英漢雙解學習詞典釋義
ADJ-GRADED
精力充沛的;精神煥發的
If you feel rested, you feel more energetic because you have just had a rest.