Six and a half hours sleep, this is way too low, Millpond Children’s Sleep Clinic recommends over nine for a 13yr old. http://www.nhs.uk/Livewell/Childrenssleep/Pages/howmuchsleep...
Sports are why kids sleep is ruined.
I wish I could find that reference, but it proved to me what I knew: I really would've done better if I'd not had to get up at 6.30am so I could walk the hour to school (both parents worked).
Why is ok to devote hours to an academic pursuit and not okay to do the same for an athletic pursuit? You could argue the "middle ground" doesn't exist in athletics like it does for other professions, but that would assume you're classifying school as simply vocational training.