A Healthier You: Your guide to finding a workout that works

0:02Hey, TED listeners, it's Dr. Shoshana, and this is Ted Health from the TED Audio Collective. Welcome back to our special end-of-year series, A Healthier You. I'm excited to dive into today's episode because it's something that I'm truly obsessed with, exercising. But before we jump in, I want to be clear, exercising looks different for everyone. We often overcomplicate fitness, thinking we need expensive gym memberships or complicated workout routines. But here's what the research actually shows. Something as simple as your daily step count can be a powerful predictor of longevity. Honestly, I don't leave the house without my step tracker on, and it's not just because I'm a doctor.

0:47Today, we're going to talk about why fitness, especially daily activity like walking, is one of the best predictors of a long, healthy life. By the end of this episode, you'll walk away with practical steps that you can take to add years to your life, no matter your age or your fitness level.

1:16First, let's talk about the power of daily activity. Daily movement has become such a huge part of my life. I remember a few years ago, I started to notice my daily steps creeping lower as my schedule got busier. It was this wake-up call that made me realize how much I was sitting throughout the day. and it was affecting everything from my energy levels to my mental clarity. That's when I made a commitment to prioritize moving more, no matter how hectic things got. Now hitting my step goal and lifting weights is non-negotiable, and it's not just about hitting a number. It's about feeling great and setting myself up for long-term health.

1:58In one study, adults who walked at least 7 ,000 steps a day lowered their risk of death by 50 to 70 % for about 11 years, compared to those who took fewer steps. That's incredible. And if you can work your way up to 9 ,000 steps, you're looking at reducing your heart disease risk significantly. Now, some of you might be thinking, 9 ,000 steps? That sounds like a lot. But here's the beautiful thing about walking. You can start wherever you are. Maybe begin with a goal of 4 ,000 steps and gradually build up. You don't need any special equipment or a gym membership, just a comfortable pair of shoes and the willingness to move.

2:43The key is consistency, not perfection. And since we're on the subject of cardio, let's dive a little deeper into something called VO2 max. Now, don't let the technical term scare you. This is simply a measure of how much oxygen your body uses when you're exercising. It's one of the most powerful predictors of longevity that we have. Research shows that compared to people with low fitness levels, people with the highest VO2 max levels are five times less likely to die from any cause over a 10-year period. You can improve your VO2 max at any age. Focus on activities that get your heart rate up for extended periods, like walking, cycling, or swimming, and try to incorporate some higher intensity bursts when you're ready.

3:31Think of it like training your heart to be more efficient, just like you train any other muscle.

3:40Speaking of muscles, let's talk about strength. This is something that often gets overlooked, especially by people focused solely on cardio. And that used to be me. I thought as long as I hopped on the elliptical for an hour a day or went out jogging, I could just skip the weights. But as I've gotten older and done more research, I've realized that there's so much more to fitness than just cardio. Building up your muscle strength really matters. Your grip strength alone can be a powerful predictor of longevity. For me, I remember a moment when I was carrying a heavy suitcase and needed to lift it over my head on the airplane.

4:21I realized how much I took my strength for granted. And it wasn't just about convenience. This is about independence. Think about how often we push, pull, or carry heavy things in our everyday lives. Your muscles support your body in all these daily actions. So maintaining strength is about staying functional, independent, and healthy as you age. Muscle mass matters too. Higher muscle mass is strongly linked to lower mortality from heart disease, cancer, and respiratory illnesses, and even osteoporosis and diabetes. Muscle tissue is metabolically active, meaning it helps regulate your blood sugar, promotes insulin sensitivity, and even produces compounds that reduce inflammation throughout your body.

5:13The more muscle you have, the more resilient your body becomes. This is especially crucial for women. And I want to take a moment to address something that I hear all the time in my practice. Many women tell me that they're afraid of bulking up or looking too muscular if they start strength training. Let me put those fears to rest. Building significant muscle mass is incredibly challenging, even intentionally. I can't tell you how many times I've seen patients, friends, or even myself fall into that misconception. For example, I vividly remember the first time that I picked up a heavier dumbbell at the gym.

5:54I was so nervous that I'd wake up the next day with overly bulky arms. But instead, what I noticed over time was feeling stronger, leaner, and more capable of handling daily tasks, like carrying all those grocery bags up the stairs in one trip. What strength training actually does for women is help maintain bone density, boost metabolism, and protect against age-related muscle loss. This loss of muscle mass and strength is known as sarcopenia. Research has shown that after the age of 30, adults begin to lose between 3 and 8 % of their muscle mass per decade. After the age of 50, muscle loss speeds up and you lose between 5 to 10 % of your muscle mass every 10 years.

6:43The good news is that strength training can slow or even reverse this process. It's never too late to start, and the benefits go far beyond aesthetics. It's about maintaining independence and protecting your health and feeling confident in your body as you age. Fitness is also one of our most powerful tools for supporting our brain as we age and preventing cognitive decline. The research here is stunning. Individuals with high fitness levels compared to medium fitness levels are 88 % less likely to develop dementia. That's not a small difference. It's dramatic. Every time you go for a walk or do some strength training, you're not just helping your body, you're protecting your brain.

7:30So what's the ultimate exercise prescription for longevity? The research points to a combination of activities that work together synergistically. Let's break this down based on the science. We'll build a workout plan together after a quick break.

7:53So we want to get moving. Let's break down what that should look like. Aim for 150 minutes of moderate intensity activity, or 75 minutes of vigorous intensity exercise, or a mix of the two each week. Moderate is something like brisk walking at about 3 to 4 miles per hour, or biking at 10 to 12 miles per hour. Add in some vigorous exercise when you can. These are activities that get your heart rate up to about 70 to 85 % of your max heart rate, like jogging at 6 miles per hour or cycling at 14 to 16 miles per hour. Include strength training at least twice a week. If this feels daunting, here's one piece of research that I find incredibly motivating.

8:40Studies show that making exercise social, whether by walking with a friend or joining a yoga class, not only improves consistency, but also enhances the health benefits by fostering social connection. So consider finding a movement buddy or joining a community. The support and camaraderie can be just as valuable as the exercise itself. Now, this isn't one size fits all. Your fitness journey will look different depending on your age and your current abilities. If you're in your 20s or 30s, this is your chance to build habits that will serve you for decades. Focus on building both cardiovascular fitness and strength.

9:22Think of it as an investment in your future health. The fitness foundation you build in these decades can literally add years to your life. For those in later years, it's never too late to start reaping the benefits of movement. Focus on activities like walking, swimming, and gentle strength training, which can dramatically improve mobility, independence, and quality of life. If you're in your middle age, you should prioritize maintaining what you have. This is when many people start losing muscle mass and cardiovascular fitness. But it doesn't have to be that way. Keep moving, keep lifting weights, and stay consistent with your routine.

10:03Here's something remarkable. Research shows that middle-aged adults who maintain their fitness levels experience a compression of morbidity, meaning they spend fewer years dealing with chronic illness at the end of their lives. They're not just living longer, they're living better. And speaking of living better, let's talk about recovery and sleep. Studies show that proper recovery, including good sleep, can improve exercise performance. If you're in your 40s or 50s, alternating between higher and lower intensity days isn't just okay, it's optimal. Here's what really excites me about the research on fitness.

10:44It shows us that exercise has different benefits at different intensities, and we need all of them. Think of it like a pyramid. At the base, you have your daily movement, your walks, your gardening, your household activities. These build your foundation. Then you add your moderate exercise. Maybe it's a brisk walk or a bike ride. And at the top, you have those brief moments of higher intensity. Maybe it's walking quickly upstairs or doing a quick set of squats.

11:17Let me share a quick story from my practice. I had a patient, let's call her Sarah, who started with just five minutes of walking each day. She was in her 60s and had never exercised regularly before. She stayed consistent. She gradually increased her activity level. Two years later, she's doing 10 ,000 steps a day. Her blood pressure has normalized, and she tells me she has more energy than she did in her 50s. Sarah's story gets even better. Six months into her journey, she started adding simple strength training exercises. Just bodyweight squats and wall push-ups at first. Now she's doing resistance training twice a week.

11:59Her bone density scan actually showed improvement, something that we don't see very often in women in her age group. Her balance has improved so much that her grandkids can't knock her over when they run to hug her anymore. In the end, the best exercise program is the one that you'll actually do consistently. So find what brings you joy and movement, whether that's taking a dance class, playing with your niece and nephew, or taking a peaceful morning walk. And whether you're 25 or 75, the best time to start is right now. The human body is remarkably resilient. It's never too late to start, and it's always ready to adapt and improve.

12:46So here's my challenge to you. Take one step today toward better fitness. Maybe it's a 10-minute walk. Maybe it's five squats while brushing your teeth. Maybe it's just standing up every hour during your workday. Whatever it is, start right there. Because when we make movement a natural, joyful part of our daily lives, that's when the real magic happens not just in terms of longevity but in the quality of every single day that we live because movement truly is medicine i'd love to hear about your exercise journeys tag me at shoshanna md on instagram or send me a dm ted health is part of the ted audio Collective.

13:33This episode was produced by me, Shoshana Ungerleider, and Costanza Gallardo, edited by Alejandra Salazar, and fact-checked by Vanessa Garcia-Woodworth. Special thanks to Maria Lages, Farrah DeGrunge, Tali Emlin, Daniela Balarezo, and Roxanne High Lash. I'm Dr. Shoshana Ungerleider, and thanks for listening.

14:02Thank you.