Context: I just spent a solid whack of time in the mountains , six full days out of the last eight hiking in Garibaldi Provincial Park . And I could n't be happier still feeling the burn in my legs . It started last Sunday with a 30-plus kilometre day trip into the Diamond Head area .
Question: What is causing the narrator to be presently so exhausted ?
Option 0: None of the above choices .
Option 1: They did not sleep the night before .
Option 2: They just went off on an excursion .
Option 3: They could n't get to bed .
Answer: 2