Muscle Is the Organ You Lose First Unless You Train It

By Athlete's Care on January 14, 2026

Did you know, muscle is the part of the body we lose first and fastest as we age. Most people worry about their heart, their joints, or their bones as they get older. Very few people think about muscle. 

Muscle loss does not start when you are old. It starts in your thirties. At first, it is easy to ignore. You still feel fine. You can still do most things. But small changes begin. You sit more. You move less. Injuries take longer to heal. Back pain and joint pain show up more often. Your body becomes a little less forgiving.  If muscle is not trained in these early years, the foundation is weak. What is lost in your thirties is much harder to rebuild later.

As people move into their forties, the effects become harder to ignore. Everyday tasks start to feel heavier. Knees, hips, and shoulders complain more often. Recovery from long days, workouts, or minor injuries takes longer than it used to. Many people begin to avoid certain movements because they are afraid of pain. Over time, that avoidance leads to more weakness, not less pain.

By the fifties, muscle loss speeds up even more. Balance begins to decline. Getting up from the floor feels harder. Carrying groceries or lifting luggage feels risky. Many people lose confidence in their bodies and start moving more cautiously. People stop doing things not because they cannot do them, but because they are afraid they might get hurt.

In the sixties, muscle becomes the difference between staying independent and needing help. A short illness, injury, or surgery can cause a large loss of strength. Time spent resting becomes harder to recover from. Without enough muscle, getting back to normal takes longer each time, and sometimes it does not fully happen.

By the seventies, muscle often decides how someone lives. Weak legs make stairs dangerous. Poor balance increases the risk of serious falls. Weak grip makes daily tasks frustrating. People with more muscle move better, recover faster, and stay in control of their daily lives longer.

Being strong acts like a shield for your body. Low muscle strength is now seen as a health warning sign, similar to things like smoking, diabetes, or high blood pressure. While smoking and diabetes are very serious risks, research shows that low strength can predict poor health and early death just as strongly as many common medical conditions. In some studies, weakness is a better sign of future health problems than weight or cholesterol levels. This does not mean strength replaces medical care, but it shows that muscle strength plays a major role in how well the body handles stress, illness, and aging.

The hardest part about muscle loss is that it happens quietly. You do not notice it day to day. Years can pass before the effects become obvious. When they do, people often blame aging. But aging is not the real problem. Weakness is.

Muscle does more than help you move;

  • It protects your joints.
  • It keeps you balanced.
  • It helps control blood sugar.
  • It supports bone strength.
  • It helps you recover from injuries and illness.
  • Muscle gives you confidence in your body. When muscle is lost, pain, fear of movement, and loss of independence often follow.

The good news is that muscle can be built and maintained at almost any age. The body responds to strength training even later in life. But muscle only stays if it is used. Walking and staying active are good for health, but they are not enough to protect muscle on their own. Muscle needs resistance and challenge to stay strong.

Strength training does not mean lifting heavy weights or pushing through pain. When done properly, it is safe, controlled, and adjusted to the person. The goal is not to train harder, but to train smarter.  Keeping muscle is far easier than trying to rebuild it after it is gone.


 

Article provided by RMT and Certified Personal Trainer, Ian ParonIan knows the importance of maintaining muscle and strength and the vital role they play in both performance and quality of life. Ian shares his passion for strength training with everyone from competitive athletes looking to prevent injury or increase their performance, to retired grandparents wanting to be able to continue to play with their grandchildren.

Click here for more information about Personal Training at Athlete's Care Leaside or call 416-546-9454 today