Get enough shut - eye: aim for 7.5 to nine hours of sleep per night for optimal recovery and hormonal balance. (womenshealthandfitness.com.au)
Get 7 - 8 hours of quality sleep per night and put some time and energy into recovering. (theathleticbuild.com)
And children who do have attention and hyperactivity issues found that their symptoms improved with even just 27 minutes more sleep per night (source). (mamanatural.com)