Physical Activity and Exercise Guidelines for Healthy Adults: ACSM Recommendations for the USA

 Physical Activity & Exercise Recommendations (ACSM Guidelines)

Physical Activity and Exercise Guidelines for Healthy Adults

When determining how much exercise a person should get, it’s important to consider their individual goals. For example, an athlete training for high performance will require significantly more exercise time and intensity compared to someone exercising for general health. The time commitment may also differ depending on the goal—such as weight loss, improving cardiovascular health, building strength, or simply maintaining wellness.

For now, we’ll focus on the general physical activity recommendations for healthy adults in the United States, based on the American College of Sports Medicine (ACSM, 2013).

General Exercise Guidelines for Healthy Adults (Ages 18–65)

According to ACSM:

1. Aerobic (Cardiorespiratory) Exercise

Healthy adults should participate in one of the following:

✔ 150 minutes per week of moderate-intensity aerobic exercise

Example: 30 minutes per day, 5 days per week
(Moderate intensity = noticeable increase in heart rate and breathing)

OR

✔ 60 minutes per week of vigorous-intensity exercise

Example: 20 minutes per day, 3 days per week
(Vigorous intensity = significantly elevated heart rate, heavy breathing)

Breaking Up the Time Is Okay

If completing a full 20–30 minute session is difficult, you can break it into shorter blocks, such as:

• 10-minute sessions
• 5-minute sessions (if necessary)

The long-term goal is to complete sessions in one block, but remember:

Something is always better than nothing—as long as no contraindications exist.

What Are Contraindications?

A contraindication means the risk of exercising outweighs the benefits due to a medical condition.
This is why health screening before starting a program is essential.

You will complete a PAR-Q (Physical Activity Readiness Questionnaire) to ensure safety.

2. Muscular Strength & Endurance Training

ACSM recommends:

✔ Strength training 2–3 days per week

This includes exercises such as:

• Weightlifting
• Resistance band training
• Bodyweight exercises (squats, pushups, lunges)
• Machine-based strength training

Important: Allow 48 hours of rest before training the same muscle group again.

This helps prevent injury, overtraining, and muscular fatigue.

More detail on muscular strength and endurance will be covered in Chapter 6.

3. Flexibility Training

ACSM also recommends engaging in flexibility-enhancing activities:

✔ 2–3 days per week

Examples:

• Stretching
• Yoga
• Mobility routines

More guidance on flexibility can be found in Chapter 7.

These Are Minimum Guidelines—Not Maximum

Many Americans may need more than the minimum to reach specific goals such as:

• Weight loss
• Strength gains
• Athletic performance
• Body composition improvement
• Cardiovascular conditioning

But for general health and overall wellness, meeting these minimum recommendations is an excellent foundation.

Start where you are. Progress gradually. Consistency matters more than perfection.

Check With Your Healthcare Provider

While most adults are healthy enough to begin exercising, it’s always wise to consult a doctor—especially if you have:

• Chronic health conditions
• Recent injuries
• Cardiovascular concerns
• Mobility limitations

You will complete the PAR-Q below to ensure safety before participating in physical activity for this class.

Remember:

Most people can exercise safely, but a small number may have conditions that make certain activities unsafe.

 

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Physical Activity vs. Exercise: Simple Definitions, Examples, and Fitness Tips

The Basics of Physical Activity, Exercise, and Fitness: What Americans Need to Know in 2026

Physical Activity vs. Exercise: Simple Definitions, Examples, and Fitness Tips

Confused about the difference between physical activity and exercise? This easy guide explains both, with examples, benefits, and expert-backed fitness recommendations to help you improve your health and daily activity levels.

In today’s health-driven world, understanding the difference between physical activity, exercise, and fitness is essential. Whether your goal is weight loss, better energy, muscle strength, or long-term disease prevention, knowing these basics helps you build a realistic, effective, and sustainable wellness plan.

Across the USA, interest in daily movement, home workouts, fitness trackers, metabolic health, weight management, and cardio training has skyrocketed on Google Trends. But before diving into workouts, it’s important to understand the foundation.

What Is Physical Activity? (ACSM Definition)

According to the American College of Sports Medicine (ACSM, 2013), physical activity is:

“Any bodily movement produced by the contraction of skeletal muscles that results in a substantial increase in caloric requirements over resting energy expenditure.”

In simple terms, physical activity is anytime your body moves enough to burn more calories than when resting.

Common Examples of Physical Activity

• Walking your dog
• Taking the stairs
• Gardening or yard work
• Household chores
• Carrying groceries
• Playing with kids
• Shoveling snow
• Construction or manual labor
• Wood splitting

These actions are not planned workouts, but they still boost calorie burn, support mobility, and help maintain overall health.

What Is Exercise? (ACSM Definition)

ACSM defines exercise as:

“A type of physical activity consisting of planned, structured, and repetitive bodily movement done to improve or maintain components of fitness.”

This means exercise is intentional and goal-driven.

Exercise Is Physical Activity, But Not All Physical Activity Is Exercise

What makes something exercise is intention, structure, and repetition.

Examples of Exercise

• Jogging or treadmill running
• Strength training at the gym
• Yoga or Pilates classes
• A 30-minute HIIT session
• Cycling for cardiovascular endurance
• Swimming laps
• Following a workout plan on an app
• Hiking specifically to improve cardio fitness

If you're doing the activity with a clear fitness goal—such as improving endurance, strength, flexibility, or burning a set number of calories—it counts as exercise.

Physical Activity vs. Exercise: Key Differences

Feature	Physical Activity	Exercise
Purpose	Daily movement, lifestyle activity	Improve fitness or health
Planned?	Usually not	Yes
Repetitive?	Not always	Yes
Goal-Based?	Sometimes	Always
Examples	Walking at work, cleaning, gardening	Gym workout, cardio training, sports practice

Why Understanding the Difference Matters

In the USA, millions of people assume they need intense gym sessions to get healthier. But both physical activity and exercise contribute to better fitness—just in different ways.

Health Benefits of Physical Activity

• Increases daily calorie burn
• Reduces stiffness and improves mobility
• Supports cardiovascular health
• Helps maintain a healthy weight
• Boosts mood and reduces stress

Health Benefits of Exercise

• Improves heart and lung function
• Builds muscle mass and strength
• Increases bone density
• Enhances flexibility and balance
• Supports long-term metabolic health
• Helps with weight loss and body composition

Both play an essential role in total fitness.

Why Many Americans Confuse the Two

In everyday conversation, “exercise” and “physical activity” are often used interchangeably. But health experts emphasize the difference to help people set realistic goals.
For example:

• Hiking for fun = physical activity
• Hiking to reach a target heart rate zone or improve endurance = exercise

The movement is the same, but the purpose changes the category.

How Much Physical Activity and Exercise Do You Need?

According to U.S. guidelines and ACSM recommendations:

Weekly Goal for Adults

✔ 150+ minutes of moderate-intensity activity, OR
✔ 75 minutes of high-intensity exercise, PLUS
✔ 2–3 days of strength training

This combination supports:
🔹 Weight management
🔹 Cardiovascular health
🔹 Muscle development
🔹 Metabolic function
🔹 Long-term disease prevention

How to Get Started (Beginner-Friendly Tips)

Whether you're new to fitness or restarting, here’s a simple approach:

Step 1: Increase Daily Physical Activity

• Park farther from the store
• Take short walking breaks at work
• Use the stairs
• Do a 10-minute stretch routine
• Clean or declutter your home

Step 2: Add Structured Exercise

Try:

• 20–30 minutes of brisk walking or treadmill
• Beginner strength workouts 2–3 times/week
• Low-impact cardio (cycling, elliptical)
• Home workout videos

Step 3: Track Your Progress

These tools are trending in the USA:

• Apple Health / Google Fit
• Fitbit or Garmin trackers
• MyFitnessPal
• MapMyRun
• Strava

Tracking increases motivation and consistency.

Final Thoughts: Movement Matters—In Every Form

Whether through physical activity or structured exercise, movement is medicine. Understanding the difference helps you build a balanced routine that supports your fitness goals, lifestyle, and long-term wellness.

You don’t need to spend hours in the gym to get healthier—every step, lift, stretch, and movement counts.

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SMART Goals: The Proven Strategy for Successful Behavior Change

 SMART Goals: The Proven Strategy for Successful Behavior Change

SMART Goals: The Proven Strategy for Successful Behavior Change

Behavior change is rarely a straight path. Relapse is common, motivation fluctuates, and vague goals often lead to frustration. One of the most powerful ways to increase your chances of success—whether in health, fitness, finances, or daily habits—is to set SMART goals.

The SMART framework ensures your goals are practical, structured, and achievable. As highlighted in Fahey et al. (2020), SMART stands for Specific, Measurable, Attainable, Realistic, and Time-Frame Specific. When a goal includes all five components, your likelihood of progress increases dramatically.

Below is a breakdown of each element and how to apply it in real life.

S — Specific: Clearly Define What You Want

A goal must be clear and detailed—not vague or open-ended.

Vague goal: “I want to save money.”
Specific goal: “I want to save $100.”
More specific: “I want to save $100 per week by not eating out.”

The more precise your goal, the easier it is to plan the steps to achieve it.

 

M — Measurable: Track Your Progress

If you can’t measure it, you can’t monitor improvement.

Measurable metrics include:

• Dollars
• Pounds
• Time
• Number of workouts
• Number of pages read

Example:
You can track savings by counting your dollars or checking your bank balance. Measurement provides motivation because you can see real progress.

 

A — Attainable: Make Sure the Goal Is Possible

A goal must match your capacity, resources, and current situation.

Ask yourself:

• Do you have the tools you need?
• Do you have the time and energy required?
• Are the necessary resources available?

Example:
If your goal requires equipment or access you don’t have, you may need to adjust the plan before you begin.

 

R — Realistic: Keep Expectations Reasonable

Realistic goals prevent burnout and disappointment.

Example:
If you earn $2,000 per month, planning to save $1,500 is unrealistic. But saving $300–$400 may be reasonable.

A realistic goal fits your current lifestyle and responsibilities while still challenging you.

 

T — Time-Frame Specific: Define Your Deadline

Deadlines create urgency, help structure your plan, and prevent procrastination.

Example:
“I want to save $400 by the end of the month.”

A defined timeframe gives you a start and end point and keeps you accountable.

 

Why SMART Goals Work

SMART goals:

• Turn vague ideas into clear plans
• Reduce overwhelm
• Increase motivation
• Create measurable progress
• Strengthen commitment
• Improve long-term behavior change

Whether you’re trying to build healthier habits, save money, start a fitness routine, or change your lifestyle, SMART goals provide a roadmap that makes success achievable—even when setbacks happen.

 

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Turn Your Target Behavior Into a SMART Goal

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Stages of Change Model: How Real Behavior Change Actually Happens

Stages of Change Model: How Behavior Change Really Works | U.S. Wellness Guide 

Learn the five key stages of the Transtheoretical Model—precontemplation, contemplation, preparation, action, maintenance, and termination—and how they shape real behavior change. Ideal for fitness, health, and lifestyle improvement in the U.S.

How Real Behavior Change Actually Happens

Creating meaningful, long-term change—whether in health, fitness, productivity, or lifestyle—requires more than motivation. It requires understanding how humans naturally transition from old habits to new ones. That’s where the Transtheoretical Model, also known as the Stages of Change Model, becomes a powerful tool for personal transformation.

This model is widely used across the U.S. in wellness coaching, fitness programs, healthcare, counseling, and behavior-change strategies because it breaks down the journey into clear, manageable stages. No matter the goal—quitting smoking, getting active, eating healthier, or improving mental well-being—the process is similar.

Below is a breakdown of each stage and how they relate to real-life behavior change.

 

1. Precontemplation: “I’m not ready to change.”

In this earliest stage, a person:

• Does not intend to change
• Believes the cons outweigh the pros
• May be unaware, in denial, or simply uninterested in change

Example:
Someone understands that physical activity is healthy, but still feels the time, discomfort, or effort outweigh the benefits.

People can stay in this stage for years—or forever—if nothing pushes them forward.

 

2. Contemplation: “Maybe I should change… someday.”

At this point, a person begins to recognize that the benefits of change might outweigh the downsides. They’re thinking about changing but haven’t taken action yet.

Typical behaviors include:

• Researching information
• Exploring options
• Planning to change within the next six months

Example:
Someone thinking about starting an exercise routine may schedule a physical exam, research gyms, or look into buying proper shoes.

They’re getting ready—but they’re not committed yet.

 

3. Preparation: “I’m getting ready to take action.”

In this stage, people plan to make a meaningful change within the next month. They may even start taking small steps.

Example behaviors:

• Going for a walk
• Buying workout clothing
• Setting a schedule
• Testing small changes in routine

They haven’t fully adopted the new behavior, but they’re actively building momentum.

 

4. Action: “I’m doing it.”

Here, the benefits clearly outweigh the barriers, and the person has started taking consistent action.

Characteristics of the Action stage:

• High motivation
• Strong commitment
• Visible lifestyle adjustments

But it’s important to remember:
Relapse is common.
Behavior change often requires several attempts before it becomes consistent.

 

5. Maintenance: “I’ve been doing this for a while.”

A person enters maintenance after sustaining the new behavior for six months or more.

Examples:

• Exercising three days a week consistently
• Eating healthier long-term
• Successfully managing stress using new habits

The goal here is preventing relapse and reinforcing consistency.

 

6. Termination: “This is just who I am now.”

At this advanced stage, the behavior is fully integrated into the individual’s lifestyle.
They are:

• Confident
• Consistent
• Unlikely to relapse

Example:
Someone who used to struggle with exercise now feels uncomfortable not being active—it’s part of their identity.

 

Relapse: A Normal Part of the Process

Although relapse is not an official stage, it is extremely common. Falling back doesn’t mean failure—it means you’re human.

Key steps after a relapse:

• Acknowledge it
• Avoid guilt or shame
• Give yourself credit for past progress
• Re-enter the appropriate stage and move forward

As Fahey et al. (2020) emphasize:
Forgive yourself, reset, and begin again.

 

Why the Stages of Change Model Matters

For anyone in the U.S. looking to improve health, manage stress, adopt fitness routines, or break negative habits, the Stages of Change Model provides a clear roadmap. It helps people:

• Identify where they truly are
• Understand what’s holding them back
• Build the right strategy for their stage
• Stay motivated even during setbacks

Behavior change isn’t instant—it’s a journey. And this model helps ensure the journey is realistic and achievable.

 

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