A hard hike

Today my uncle brought me my father and nicnic93 on a hike. We had to climb 1000 steps. We had to walk quite a long distance to reach the 1000 steps. Even then I was tired. So I pushed myself to climb 1000 steps but on the 100 over steps I stopped. I was so tired. So I rested at a railing then I felt like fainting. Then I told my father that I could not carry on. So I sat at the step and drank some water . While I was resting at the railing, I felt so giddy but all I needed was oxygen as no oxygen went to my brain. So me and my father went back down and sat at a near by bench. My uncle, auntie and nicnic93 continued the hike and managed to complete the hike. So I guss I need more training.