reduced adverbial clause

English as a Second Language English Vocabulary, Grammar and Idioms
1

Hello everyone,

As I had slept for ten hours, I felt marvelous.
reduced to:
1-Having slept for ten hours, I felt marvelous.
2-sleeping for ten hours, I felt marvelous.
which one is correct; 1 or 2?

2
  1. is correct.
    For further information, you have used the AmE spelling ‘marvelous’. BrE spelling is ‘marvellous’.