Context: We climbed to the East Peak of Mt. Tam and back from SF on this fine Labor Day afternoon ( about 50mi ) . I did n't think I was able to do it ( it 's a 2.4 kft hill ) , but we did it anyway . I do n't know about the others but I had to push myself ( although it might not look it !

Question: Why do you think you were able to do the hike despite being unsure you would be able to ?
Options:
0. I tend to underestimate my ability of what I can do
1. I am out of shape but the hike was easy
2. The hike was not difficult so it was easy to do
3. I was overthinking whether I could do it when deep down I knew it would be simple
Answer: 0