When most people think about strength training, they think about building bigger muscles, becoming more toned, losing weight, or changing the way their body looks.
Those are certainly benefits—but they may be some of the least important reasons to pick up a weight.
Strength training is an investment in your future.
Muscle influences how we move, how we metabolize glucose, how well we maintain our independence as we age, and even the health of the tiny energy-producing structures inside our cells—our mitochondria.
The goal isn't simply to look stronger.
The goal is to stay stronger—for life.
Muscle Is About So Much More Than Appearance
Beginning around midlife, maintaining muscle becomes increasingly important. Without resistance exercise, we gradually lose muscle mass and strength as we age—a process associated with sarcopenia.
Eventually, that loss can affect everyday life.
Can you carry your groceries?
Can you lift your suitcase?
Can you get up from the floor?
Can you climb a flight of stairs without struggling?
Can you catch yourself if you trip?
Can you continue hiking, biking, golfing, gardening, traveling, and doing the things you love into your 70s, 80s, and beyond?
These are the reasons I want people to think differently about muscle.
We aren't building muscle simply for today.
We're building it for the person we want to be 10, 20, and 30 years from now.
Strength Training and Longevity
Research consistently associates regular physical activity—including muscle-strengthening exercise—with better long-term health and a lower risk of premature death.
Strength training can help maintain:
Muscle mass and strength. Maintaining muscle becomes increasingly important as we age.
Bone density. Resistance exercise places healthy stress on our bones, stimulating them to maintain strength.
Balance and stability. Strong legs, hips, glutes, and core muscles help support balance and may reduce the risk and consequences of falls.
Metabolic health. Skeletal muscle is one of the body's major destinations for glucose. Increasing and regularly using muscle can improve insulin sensitivity and glucose regulation.
Cardiovascular health. Resistance exercise can contribute to improvements in blood pressure, body composition, insulin sensitivity, and other cardiovascular risk factors.
Independence. Perhaps one of the greatest benefits of all is maintaining the physical capacity to continue taking care of ourselves.
Living longer is wonderful.
But I don't just want more years.
I want more healthy, active years.
Your Muscles Are Metabolic Organs
We often think of muscle as something that simply moves our skeleton.
It is much more dynamic than that.
Skeletal muscle is metabolically active tissue and plays an important role in glucose disposal, energy metabolism, and communication throughout the body.
When muscles contract during exercise, they also release signaling molecules called myokines. Researchers are continuing to study how these molecules communicate with other tissues and influence metabolism and inflammatory processes.
This helps explain why exercising our muscles can have effects far beyond the muscles themselves.
Strength Training and Your Mitochondria
Here's where strength training becomes especially fascinating.
Inside most of our cells are tiny structures called mitochondria.
You may remember them from biology class as the powerhouses of the cell.
Their job is to convert nutrients into ATP—the usable energy that powers cellular activity.
As we age and become less active, mitochondrial function can decline. Exercise provides a powerful stimulus that encourages our cells to adapt.
Both resistance training and aerobic exercise can improve aspects of mitochondrial function and capacity within skeletal muscle. Exercise stimulates cellular signaling involved in mitochondrial remodeling and the creation of new mitochondrial components—a process often described as mitochondrial biogenesis.
Think about what that means.
Every time you challenge your muscles appropriately, you're not simply changing what you see in the mirror.
You're creating adaptations inside your cells.
What About Immunity?
Exercise and immune health have an interesting relationship.
Regular moderate physical activity is associated with healthier immune regulation and lower levels of chronic inflammation. Exercise temporarily mobilizes various immune cells into circulation, allowing them to move throughout the body.
Over time, consistent exercise appears to support healthier immune surveillance and regulation.
But more isn't always better.
Excessive training without adequate recovery, nutrition, hydration, or sleep can become another source of physiological stress.
This is why I always come back to balance.
Challenge your body.
Then give it what it needs to recover.
Muscle Helps Manage Blood Sugar
This is one of my favorite reasons to encourage strength training.
Your muscles are a major consumer of glucose.
When you exercise, contracting muscles increase glucose uptake. Over time, resistance training can improve insulin sensitivity and help the body manage blood sugar more effectively.
That's important whether you're metabolically healthy today or working to improve elevated fasting glucose, insulin resistance, or A1C.
Nutrition matters tremendously—but movement is another piece of the metabolic puzzle.
Build the muscle. Then use it.
You Don't Need to Live at the Gym
One of the biggest misconceptions about strength training is that it requires hours in the gym every day.
It doesn't.
For many adults, two to three well-designed strength-training sessions per week can provide meaningful benefits. The key is consistency and gradually challenging the muscles over time.
Federal physical activity guidelines recommend that adults perform muscle-strengthening activities involving all major muscle groups on at least two days each week, in addition to aerobic activity.
If you're new to strength training, start slowly. Learn proper technique before increasing resistance.
Your goal isn't to prove how much weight you can lift.
Your goal is to become progressively stronger without unnecessarily injuring yourself.
A Sample Week of Strength Training
The following is an example of a three-day, full-body strength program for a generally healthy adult. The resistance should be challenging enough that the final few repetitions require effort while still allowing good form.
MONDAY — FULL BODY A
Legs/Glutes: Squats — 3 sets × 8–12 reps
Back: Seated cable row or resistance-band row — 3 × 8–12
Chest: Dumbbell chest press or push-ups — 3 × 8–12
Shoulders: Dumbbell shoulder press — 2–3 × 8–12
Hamstrings/Glutes: Romanian deadlift — 3 × 8–12
Biceps: Dumbbell curls — 2 × 10–15
Triceps: Cable pressdowns or overhead extensions — 2 × 10–15
Core: Plank — 2–3 × 20–60 secondsWEDNESDAY — FULL BODY B
Legs/Glutes: Reverse lunges or split squats — 3 × 8–12 each leg
Back: Lat pulldown — 3 × 8–12
Chest: Incline dumbbell press — 3 × 8–12
Shoulders: Lateral raises — 2–3 × 10–15
Glutes: Hip thrusts or glute bridges — 3 × 10–15
Biceps: Hammer curls — 2 × 10–15
Triceps: Triceps extensions — 2 × 10–15
Core: Dead bugs or bird dogs — 2–3 × 8–12 each sideFRIDAY — FULL BODY C
Legs: Goblet squat or leg press — 3 × 8–12
Back: One-arm dumbbell row — 3 × 8–12 each side
Chest: Push-ups or machine chest press — 3 × 8–12
Hamstrings: Hamstring curls — 3 × 10–15
Glutes: Step-ups — 2–3 × 8–12 each leg
Shoulders: Rear-delt fly — 2 × 10–15
Calves: Standing calf raises — 2–3 × 12–20
Core: Side plank — 2–3 × 20–45 seconds each side
What About the Other Days?
Tuesday and Thursday: Walking, cycling, swimming, hiking, or another form of cardiovascular activity you enjoy.
Saturday: Longer recreational movement—hiking, biking, golfing, yoga, swimming, or simply being active.
Sunday: Rest and recovery.
This combination gives your body something it needs just as much as exercise:
Recovery.
Muscle doesn't become stronger while you're lifting the weight. Exercise provides the stimulus; recovery allows the body to adapt.
How Heavy Should You Lift?
You don't necessarily need extremely heavy weights.
Choose resistance that allows you to perform the exercise with excellent technique while making the last few repetitions challenging.
If you can easily complete 12 repetitions and feel as though you could perform another 10, the resistance is probably too light to provide much of a strength stimulus.
When you can consistently perform the upper end of your repetition range with good form, gradually increase the resistance.
This is called progressive overload.
Your body adapts to what you repeatedly ask it to do. To continue becoming stronger, the challenge eventually needs to increase.
That might mean:
- Increasing the weight
- Adding repetitions
- Adding a set
- Improving your range of motion
- Slowing the movement
- Progressing to a more challenging variation
Progress doesn't have to happen quickly.
It just needs to happen consistently.
Don't Forget Protein and Recovery
You can't talk about maintaining muscle without talking about nutrition.
Muscle requires adequate energy, protein, vitamins, minerals, and recovery to repair and adapt after exercise.
For those eating a predominantly plant-forward diet, excellent protein sources include:
Beans and lentils, tofu, tempeh, edamame, peas, seitan if gluten is tolerated, quinoa, nuts, seeds, and other minimally processed plant foods.
Protein intake becomes particularly important as we age because older muscle can be somewhat less responsive to the muscle-building stimulus from smaller amounts of protein.
Sleep matters too.
So does hydration.
So do rest days.
Exercise is the stimulus.
Nutrition and recovery help create the adaptation.
Strength Is Something We Build for Our Future Selves
We spend decades planning financially for retirement.
We contribute to retirement accounts. We invest. We save. We think about what we'll need when we're 70 or 80 years old.
I believe we should approach our physical health the same way.
Muscle is part of your health retirement account.
Every squat, push-up, row, deadlift, and strength-training session is another small deposit.
You're building stronger muscles.
You're supporting stronger bones.
You're improving metabolic health.
You're challenging your mitochondria.
You're supporting healthy aging and independence.
And you're creating a body that's better prepared to continue doing the things you love.
Don't wait until you've lost your strength to realize how valuable it was.
Build it now. Maintain it. And keep making deposits into your health—for life.
To Health & Longevity, 🌿
Innovative Wellness
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References:
- U.S. Department of Health and Human Services. Physical Activity Guidelines for Americans, 2nd Edition.
- American College of Sports Medicine. Resistance training recommendations and guidance for healthy adults.
- National Institute on Aging. How Can Strength Training Build Healthier Bodies as We Age?
- American Heart Association. Resistance Exercise Training in Individuals With and Without Cardiovascular Disease.