Bed of nails experiment

Hypothesis:  I was thinking that I should lie down on the bed of nails as flat as I could. 

Experiment: I got on the bed and I laid down as flat as I could. When my dad was getting up from the bed I moved the nails. 

Result:  When a laid down flat it didn't hurt at all but when I moved the nails on dad it did hurt.

Conclusion: I figured out that if you lie down as flat as you can on a bed of nails you should always lie down as flat as you can or you will get hurt. It doesn't hurt because your weight is spread out.