ADHD is a neurodevelopmental condition that can affect family life. The word “neurodevelopmental” refers to the nervous system, which includes the brain as it develops across the lifespan. ADHD behavior usually appears by age 7, though difficult behavior may show up before this. With ADHD, children can have trouble with impulsivity, hyperactivity, distractedness, following instructions and completing tasks. But ADHD is treatable.
ADHD is associated with the way certain neurotransmitters (chemicals in the brain that help control behavior) work, especially dopamine and norepinephrine, and this difference causes changes in two different attentional networks of the brain
She should try to get a day off so she can let her muscles relax and have time to rebuild new muscle. Remember that muscle grows slowly so within 24 hours muscle starts to grow thus she should rest for at least 1 or 2 days so she doesn't exhaust her body.