MJ decided to take an afternoon off from homework. She'd worked ahead and nothing was due until next week at this point. Since she had a shift at work in a couple hours, MJ decided to get in a run and shower before work. Then she could go home and crash, which sounded pretty wonderful to her.
After she'd run about twenty minutes, she stopped. Her shoelace came untied and MJ did not want to get hurt tripping over said shoelace. She stood up and stretched for a minute, as she debated how much further to run. Actually she might head home now, so she had time to shower and eat food.