The day you coach someone, their safety is your job.

If you run sessions for others: a qualified adult present for under-18s, written parental consent, an emergency plan (who calls 112, where the defibrillator is, first aid trained), equipment checked, and technique before load. Get legal advice before using waivers.
E Evidence: built from practice. What works for coaches and practitioners. Labelled that way.
NSCA professional standards · AAP 2020 youth strength-training guidance.
Not medical, legal or financial advice.
In The Ecosystem every framework comes with a daily action, a room that checks in, and the full library.