Dinner in cold night

I heard from other campers that it would be under 5 ℃ in the morning. After the sunset, I felt cold and quaked. So, I wore all of clothes and stayed in sleeping bag.
I tried to eat many foods for dinner in order to warm up my body. But, I couldn't rice and carry. All I could ate was instant noodle. I thought I had a cold because I was lack of appetite and quaked. It was my first experience.
Later, it started hard rain. A long night started.