Eat high quality (organic where possible) meat & vegetables, nuts and seeds, some fruit, little starch & no sugar.
Drink clean water, 2-3L per day.
Eat regularly, when hungry, every 3-5hrs.
Understand good posture, body mechanics, technique before intensity and endurance.
Practice and train major lifts: Deadlift, clean, squat, presses, C&J, and snatch.
Learn how to lunge and twist in 3 planes of motion
master the basics of gymnastics: pull-ups, dips, rope climb, push-ups, sit-ups, presses to handstand, pirouettes, flips, splits, and holds.
Climb, Bike, run, swim, row, etc, hard & fast.
Exercise four or five days per week mix these elements in as many combinations and patterns as creativity will allow. Routine is the enemy!
Keep workouts short and intense. Regularly learn and play new sports.
Practice either specific dynamic Joint mobility, stretching, Yoga, Tai Chi, Chi Kung and ……
Meditate daily, laugh & smile!