Strength + Calisthenics + Cardio = A balanced diet of exercise for all ages
We need strength training (weight training) to prevent muscle atrophy, to build muscle and bone, to maintain our best functionality, and so we can do Calisthenics and play sports with force. Also, to look good. Looking good does matter in life.
We need Calisthenics (which includes sports) to make full use of all of our muscles, to maintain athleticism, endurance, sexuality, general vigor, and mental happiness
We need some high-intensity Cardio to build or maintain endurance and heart strength
- A person can be very strong but have terrible cardio endurance and terrible agility; runners can have great aerobic cardio endurance but be weak in bone and muscle and unable to handle an hour of intense calis because they have mistakenly aerobically-trained exclusively. The aerobic cardio fitness fad of recent decades was/is greatly overrated. It was over-sold and it damaged a lot of joints. Anyway, the three components are interdependent and overlap to varying degrees: lunges are strength + calis, jump rope and jumping jacks are calis+ cardio, all weight training provides brief but intense cardio stress, etc.
- As a footnote, but not a trivial one, I usually add proper nutrition because a demanding fitness program requires it. The 5-hr/wk program we espouse for general Fitness For Life (approx 2 hrs of weights, approx 1 hr of Calis, and approx 1 hr of cardio (2 half-hr sessions of cardio intervals) demands more protein and maybe more carbs than the ordinary sedentary person needs to survive. If your fitness requires weight gain for bone and muscle development, obviously more protein, fats, and carbs. If your fitness requires fat loss, obviously less carbs. Hard exercise can never eliminate excess fat but it can inspire nutritional sanity.