There is a naked body in the deserted desert, and there are no footprints around. The victim had half a match in his hand. How did this man die?

I froze to death and got lost in the desert. During the day, the sun scorched the earth, and it was too hot, so I took off my clothes and left no footprints. Because there is a sandstorm in the desert, the footprints are gone. Do I have matches in my hand? There is a big temperature difference between day and night in the desert, and it is too cold at night, so I lit a match and it was destroyed by the sandstorm, so that's what we saw.