Wait… Why Am I Sweating?!
One of my favorite things about teaching Flex + Flow is hearing people’s reactions to the exercises we do in class.
They look so easy!
Seriously, if you were watching from the outside, you might wonder how difficult some of these movements could possibly be.
But by the end of class? Everyone’s sweating, and I’m hearing how those moves are not nearly as easy as they look!
And I love it!
But here’s the part that really cracks me up.
Some of my students tell me that when they get home, they notice they’re practically gliding around the house instead of stomping around!
GLIDING! I don’t know why, but that visual makes me laugh every time.
It also makes me curious. What is it about these seemingly simple movements that challenges us so much? And why do people sometimes notice a difference in how they move afterward?
Is it flexibility? Mobility? Strength? Balance? Or maybe a little bit of everything?
I teach Zumba, Barre, and Flex + Flow, so movement is a pretty big part of my life. The more I learn about how our bodies move, the more fascinated I become.
One question worth exploring is mobility vs. flexibility. We often use those words as though they mean the same thing, but they describe different—and connected—parts of movement.
So what’s the difference, and does it really matter? Let’s get curious.
Flexibility vs. Mobility: What’s the Difference?
Flexibility is about the range of motion available through muscles and other soft tissues around a joint. Think about gently stretching the back of your legs. How far you can comfortably move into that stretch is influenced, in part, by flexibility.
Mobility is about how you actively move through an available range of motion with control. It draws on more than tissue flexibility: muscle strength, coordination, balance, and the way your joints are built all play a role.
Here’s one way to picture it: you may be able to bring your knee toward your chest when you use your hands to help, but find it harder to lift that same knee as high without assistance. The available movement and your ability to actively control it aren’t necessarily identical.
That doesn’t make one better than the other. It just means that stretching into a position and moving yourself into it are different tasks.
The American Council on Exercise makes a similar distinction: flexibility contributes to the range you have available, while mobility describes how you use that range during movement.
One Movement Doesn’t Tell the Whole Story
Here’s a real example from my Flex + Flow class.
We practice a movement called the 90/90 hip switch. You sit with your knees bent and rotate your legs from one side toward the other. It asks your hips and surrounding muscles to work together while your knees remain bent.
I have one lady in class who can do so many of our other exercises, but the 90/90 switch? That’s a different story! Movements requiring that degree of knee bending are challenging for her.
So what do we do? We modify!
Instead of asking her to sit in the traditional 90/90 position, I have her lean back for support, bring her knees up to a comfortable bend, and gently let them move from side to side, only as far as feels comfortable.
Sometimes that movement might be just an inch. ONE INCH! And that’s perfectly fine with me.
We’re not trying to win a competition for whose knees get closest to the floor. We’re exploring controlled movement in a way that works for the individual.
Her experience doesn’t tell us why knee bending is difficult for her, and it doesn’t mean she has poor mobility everywhere. It shows how one exercise can ask something very different of the body than another. A person’s joint comfort, structure, strength, coordination, and movement history can all affect what feels accessible.
Sometimes the most useful adjustment isn’t pushing farther. It’s choosing a different version of the movement.
Why Does Mobility Matter Outside a Fitness Class?
Think about all the movement that happens in a regular day: reaching for a dish on a high shelf, turning to look behind you, stepping over something on the floor, getting up from a chair, or lowering yourself to pick something up.
Those tasks call on different combinations of joint movement, muscle control, strength, and balance. You don’t have to be an athlete to benefit from being able to move comfortably through the activities that matter to you.
And mobility isn’t separate from strength. When we practice controlled movement, our muscles help us support and manage the range we’re using. It’s one reason I think movement education pairs so well with classes like Barre—small movements can require more control than they appear to from the outside.
Of course, feeling different after a class doesn’t prove a particular physical change took place. I simply enjoy hearing what my students notice, then getting curious about all the ingredients that go into everyday movement.
Five Beginner-Friendly Mobility Movements to Explore
If you’d like to get a feel for controlled movement, start small. You don’t need fancy equipment or an entire workout. A few minutes of easy walking or gentle movement to warm up is a good place to begin.
Choose whichever of these movements feel comfortable for you. The repetitions are just suggestions, not targets you need to push through.
1. Shoulder circles
Sit or stand tall. Slowly roll your shoulders forward five times, then backward five times. Notice how the movement feels rather than trying to make the biggest circle possible.
2. Ankle circles
Sit in a sturdy chair and lift one foot slightly from the floor. Gently circle your ankle five times in each direction, then switch feet. Keep the movement slow and comfortable.
3. Seated upper-body rotation
Sit upright with both feet supported on the floor. Slowly turn your upper body a little to one side, return to center, and turn the other way. Try three easy repetitions per side. Avoid bouncing or forcing a twist.
4. Supported hip circles
Stand with your hands resting on a stable countertop for balance. Keeping your standing leg comfortable, gently move your free leg in a small circle three times each way, then switch sides. Small and controlled is the goal.
5. Gentle side reaches
Stand with your feet comfortably apart. Reach one arm overhead and lean slightly to the opposite side, then come back to center. Try three slow repetitions on each side without forcing the stretch.
A quick safety note: None of these movements should require pushing through pain. Stop if something hurts, makes you dizzy, or feels unstable. If you’re dealing with an injury, persistent joint pain, or balance concerns, a healthcare professional or physical therapist can help you identify appropriate options. The American Academy of Orthopaedic Surgeons recommends starting gradually and stopping exercises that cause pain.
Do We All Need to Become More Flexible?
Not necessarily—and I think that’s an important point.
It’s easy to assume that more range of motion must always be better. But everyone’s joints, activities, and goals are different. What matters is having the comfortable, usable movement you need for your own life.
If a particular limitation affects your activities, you might benefit from a targeted approach involving mobility work, stretching, strength, or a combination. But there’s no prize for forcing yourself into the deepest possible stretch.
Stretching can improve flexibility, especially when practiced consistently. Strength and movement practice can also help us use the range we have. The American Orthopaedic Society for Sports Medicine emphasizes that flexibility needs are specific to the person, joint, and activity—not a one-size-fits-all score.
If you’re brand-new to movement, you might also enjoy my fitness tips for beginners. You don’t have to master every exercise before getting started.
Getting Curious About Your Own Movement
Next time you reach overhead, get out of a chair, or move through a workout, pay attention.
Does one side feel different from the other? Can you move slowly and comfortably? Does a small adjustment make the movement feel more natural?
You don’t have to turn those observations into a new goal or another task for your to-do list.
Sometimes noticing is enough to spark a question. And sometimes one small, comfortable movement is a perfectly good place to begin.
Start Where You Are. Grow From There.