Physical exercise directly tones the muscles and positively affects the mind-body. Many types of tissue naturally deteriorate without physical exercise. Maintaining muscle tone is by no means merely a matter of bulking muscles.
The muscles are critical to integrated sensation and well-being throughout the mind-body. Muscles are exercised in groups.
Every exercise involves muscles and reflexes outside the muscle groups feeling immediate strain. Localized muscular intelligence and the mind-brain, particularly sense of balance, are involved in every exercise. A rounded program that exercises both core body and limb muscles is recommended.
At the cellular level, exercise induces autophagy in both skeletal and cardiac muscles. Exercise activates cellular cleaning, thus maintaining more than just muscles.
Exercise unleashes into the blood a flurry of proteins critical to metabolism and regulating energy. Many head to the liver, to assist in cleanup and improved physical functioning.
Long, moderate exercise is healthier than short, intense workouts. One reason is that intense exertion quickly invokes acidosis from rapid lactate buildup. This causes fatigue and muscle burn. Too much too quickly and the body insists on desisting. Overexertion results in a delayed muscle soreness, which is inflammatory-repair response to muscle tissue damage.
For overall health, long walks and repetitions are better than short energetic bursts of activity. Even small doses of vigorous exercise are beneficial.