While no single person is credited with definitively saying that
posture, activity, and nutrition are important, multiple sources highlight their importance to overall health and well-being, often citing the views of experts and organizations who recognize these factors.
Here’s a breakdown of perspectives on the importance of each factor:

Posture:
Good posture is crucial for maintaining spinal health, preventing back and neck pain, improving breathing and digestion, increasing energy levels, and boosting confidence.
Poor posture, such as slouching, can lead to muscle strain, headaches, fatigue, and even chronic pain.
Activity:
Physical activity is essential for overall health, including cardiovascular health, and is linked to improved stamina, energy levels, and stronger muscles.
The World Health Organization (WHO) provides guidelines on physical activity and sedentary behavior, emphasizing their importance.
Nutrition:
A balanced diet is vital for supporting spinal health, strengthening bones, reducing inflammation, and maintaining healthy muscles.
Specific nutrients like calcium, vitamin D, omega-3 fatty acids, magnesium, and protein are crucial for maintaining good posture and supporting spinal health.
Hydration is also critical for spinal disc health and overall bodily function.

In summary, the importance of posture, activity, and nutrition for a healthy lifestyle is a widely recognized concept supported by various experts and organizations in the fields of health, fitness, and medicine