PRINCIPLE 1: GIVE YOUR BONES IMPACT Bones stay strong with regular load. Safe impact, like walking, hopping, or light jumping, keeps bones dense. Try double- and single-leg hops with light, quick contact - no pain. PRINCIPLE 2: PRACTICE AGILITY Stay fast and responsive. Mini-tramp running and skier drills train quick direction changes and coordination while reducing joint stress. PRINCIPLE 3: LIFT HEAVY; DO IT SAFELY Lifting heavier builds strength. Progress slowly with contr