Jumping on the trampoline before school

Joseph set up the trampoline again (it was missing the railing when we put it away) as Maddie was jumping on her bed. She saw it in the morning before school so we let her jump a bit before we headed downstairs to head to school. After a few jumps she would fall on her butt.  A little while later after jumping she said "I'm tired" so I said "You should lie down" and she did on the trampoline and pretended to be asleep.