Could One Minute of Calf Raises Help Save Your Life?
Weekly Wisdom #69
Generally, I prefer to build these posts around facts rather than speculation. But in health and fitness, conclusive facts can be very slow to reveal themselves.
And given that heart disease remains the leading cause of death worldwide, it feels important to share anything that might help prevent it. Especially if the preventive measure is free, easy, available to almost everyone, and carries very little risk.
But before we start weaving together the threads from which my speculative ideas are woven, let's begin with the facts.
What We Know About Movement and Heart Disease
Heart disease is a major killer. Cardiovascular disease accounts for approximately 3 in 10 deaths worldwide.
Walking reduces cardiovascular risk. People who take more steps each day tend to have a lower risk of developing cardiovascular disease. Research suggests meaningful reductions in risk, even without heroic amounts of walking.
Being on your feet all day isn't necessarily protective. The cardiovascular benefits associated with recreational physical activity don't always extend to people who perform physically demanding work. This is sometimes referred to as the physical activity paradox.
Prolonged sitting is associated with increased cardiovascular risk. Research presented by the American College of Cardiology found that spending more than 10.6 hours per day sedentary was associated with a substantially higher risk of heart failure and cardiovascular death.
Immobility can contribute to blood clots. Deep vein thrombosis (DVT) occurs when a blood clot forms in a deep vein, usually in the legs. Prolonged immobility, such as sitting through a long flight, can increase the risk by slowing blood flow. Learn more about DVT.
Brief bursts of vigorous movement may provide cardiovascular benefits. Research published in Nature Medicine found that short bursts of vigorous intermittent lifestyle physical activity were associated with reduced cardiovascular disease risk.
Your calf muscles help circulate blood. Research into calf muscle activity and the soleus muscle suggests that even relatively simple lower-leg movements can influence circulation and metabolism. Read the research.
Taken together, these findings suggest that how often we move throughout the day may matter more than we realize. And that brings me to the calves.
Your Calves: The Body's Second Heart
We have known for some time that the calf muscles act like a secondary heart. They play a critical role in pumping blood from your lower extremities back toward your heart, against the force of gravity.
Every time your calf muscles contract, they compress the veins in your legs, helping push blood upward. Valves in those veins help prevent it from flowing backward. When you sit or stand motionless for prolonged periods, this pumping action is reduced. Blood can pool in your lower legs, sometimes resulting in swollen feet and ankles.
Your heart, of course, continues doing its job. But your calves provide valuable assistance in returning blood to it. Think of them as a supporting cast that rarely gets the credit it deserves.
We spend plenty of time talking about strengthening the heart through cardiovascular exercise. Perhaps we should pay a little more attention to the muscles that help keep the blood moving.
Here's Where the Speculation Begins
Those are the findings that got me thinking. What follows is my own hypothesis.
Daily walking, postprandial walking (walking after meals), and movement snacks throughout the day are all associated with better health outcomes. What if some of those benefits come from something remarkably simple?
Calf activation.
Every time we walk, climb stairs, or rise onto our toes, our calf muscles contract, helping move blood back toward the heart. Could this repeated activation be one of the reasons that regular movement is so protective against cardiovascular disease?
I'm not suggesting it's the only reason. Exercise has well-established benefits for blood pressure, blood sugar regulation, cardiovascular fitness, and numerous other aspects of health. But perhaps the calf muscle pump plays a bigger role than we've appreciated.
The more frequently we activate those muscles, the more opportunities we create to assist circulation. Could that translate into better cardiovascular outcomes over time? I think it's worth considering.
Can You Have Too Much of a Good Thing?
There is an interesting wrinkle in the research. People who work physically demanding jobs, spending much of their day standing, walking, or lifting, don't necessarily experience the same cardiovascular benefits as people who exercise recreationally.
Why?
There may be other lifestyle variables at play. Occupational physical activity often involves long hours, repetitive movements, limited recovery, and relatively little control over the intensity or duration of the work. Or perhaps there's a U-shaped relationship, where more activity is beneficial up to a point, after which the benefits diminish or even reverse.
We don't know that this explains the difference. But it raises an important point: More isn't always better. Context matters.
And simply standing all day isn't the same as regularly contracting your calf muscles.
For those of us whose jobs involve sitting at a desk, this is potentially good news. We may not need to spend hours on our feet to experience some of the benefits of movement. We may just need to move more frequently.
Could One Minute an Hour Make a Difference?
Sedentary behaviour is a serious health concern, particularly prolonged sitting. My conjecture is that you could meaningfully reduce your risk of heart disease through a very simple intervention: Get up once every hour and perform one minute of movement.
A walk would be great. A workout would be better. But what if even one minute of standing calf raises could provide meaningful benefits?
Think about it. You don't need a gym membership, expensive equipment, special clothing, or even much space. You can perform calf raises beside your desk, while waiting for the kettle to boil, or during a break from watching television.
Simply rise onto your toes, lower your heels, and repeat. The movement activates the calf muscles, helping pump blood out of the lower legs and back toward the heart.
Does this mean that one minute of calf raises every hour has been proven to prevent heart disease? No. The research hasn't established that.
But we do know that prolonged sitting is associated with cardiovascular risk, that regular movement is beneficial, and that the calf muscles play an important role in circulation. Connecting those dots seems reasonable to me.
And if the only side effect is developing beautifully sculpted calves, I can't see much downside.
Small Movements, Big Possibilities
My wife, by the way, has been using a similar strategy to help control her postprandial blood sugar. It has been amazingly effective for her. Here is a woman who has not only maintained her figure for more than 30 years. She's actually trimmer than she was three decades ago.
Her experience isn't proof that calf raises prevent heart disease, of course. But it does reinforce my belief that small, consistent interventions can have surprisingly meaningful effects.
We tend to put enormous emphasis on the big efforts: the hour-long workout, the challenging CrossFit class, the heavy strength training session, the long run.
And those things absolutely have their place. Building strength, cardiovascular fitness, mobility, and physical resilience is essential to maintaining our health span—the years we spend living in good health and retaining our independence.
But what about the other 23 hours of the day? What about the small decisions we make between workouts?
Taking the stairs. Walking after dinner. Getting up from our desks. Doing a few calf raises while waiting for the coffee to brew.
These things may seem insignificant compared with a proper workout. But in my experience, it's often the little habits, performed consistently, that produce the biggest outcomes over time.
Don't Underestimate the Little Things
As a CrossFit coach, I spend a lot of time helping people build strength, improve their fitness, and develop the physical capacity to meet life's challenges. I believe deeply in the value of challenging workouts. But I also believe that healthy aging and longevity depend on more than what happens inside the gym.
Functional fitness is about being capable in everyday life. And part of that means making movement a regular feature of our day, rather than something we confine to a scheduled workout.
You don't have to choose between the two. Train hard when it's appropriate. Recover when you need to. And look for opportunities to move throughout the day.
Maybe the most important thing you do for your health today won't be particularly impressive. Maybe it will take just one minute.
I can't promise that calf raises will save your life. But given what we know about movement, circulation, and cardiovascular health, I think they're worth a try.
You may not need to make a heroic effort to make a meaningful difference to your health.
Here's to the fall of heart disease—or at least to the rise of great-looking calves!
