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Smarter, safer workouts with a wearable fitness tracker – Harvard Health

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Smarter, safer workouts with a wearable fitness tracker – Harvard Health


Do you need a little extra inspiration to be more active throughout the day? Or perhaps you’re wondering if your workouts are challenging enough to optimize your cardiovascular health. And if you have any type of heart disease, you’ll want to be sure you’re not pushing yourself too hard during vigorous physical activity. For each of these situations, a wearable fitness tracker may be a worthwhile investment, especially when you consider that exercise is widely considered the best medicine — not just for your heart but for your overall health.

You may already own such a device, as most smart watches include a range of fitness tracking features alongside their other functions. Other options include wrist-worn bands and smart rings that focus primarily on health and fitness tracking.

“The information these wearables provide is measurable, meaningful, and motivating,” says Dr. Sawalla Guseh, director of the Cardiovascular Performance Program at Harvard-affiliated Massachusetts General Hospital. “It’s like having a goal-setting coach with you around the clock,” he says.

Long-term monitoring may also alert you to heart problems, says Dr. Guseh. “I had one patient who didn’t feel chest pain or related symptoms, but he noticed his exercise performance declining over time. It turned out he had coronary artery disease,” he says.

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Features to watch

Here are some of the features on wearable fitness devices that are worth checking out.

Stand or move reminders. Many wearables feature customizable notifications — a message on the watch face or a sound or vibration — to remind you to stand up and move around for a short period of time to break up long stretches of sitting. Even dedicated runners need to avoid being sedentary throughout the day to keep their hearts healthy, says Dr. Guseh (see “Stand up for your heart” in the June 2025 Heart Letter).

Daily step counts. Although you’ve likely heard that 10,000 steps per day is a good goal, that number was based on a Japanese marketing scheme and not actual data. Recent evidence finds that a lower number — anywhere from 4,000 to 7,000 daily steps — is linked to improved heart health. A smartphone (provided you carry it with you most of the day) can give a close estimate of your daily step count, but a wearable will be more accurate. Data from your smart watch automatically syncs with your smartphone, and most have apps that display trends in your step counts and other exercise data over weeks, months, and years.

Heart rate zones. Wearables make it easier to assess your exercise effort with heart rate zones, which classify how intensely you’re exercising by measuring your heart rate. The zones are based on your maximum (or peak) heart rate (MHR) — an estimate of the upper limit of what your cardiovascular system can handle during physical activity. A commonly used formula for MHR is 220 beats per minute minus your age, but you should consider this a ballpark figure, since factors other than age are at play.

Different wearables have varied numbers of heart rate zones, although five is typical. Zones 2 and 3 are generally thought to correspond to moderate-intensity exercise, while zones 4 and 5 correspond to vigorous-intensity exercise. But because they’re not individualized, they may not be accurate for everyone, Dr. Guseh notes. Ideally, you should do at least 150 minutes of moderate-intensity exercise, or 75 minutes or more of vigorous-intensity exercise, or an equivalent combination every week.

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Heart rate recovery (HRR). This value reflects your heart’s ability to return to its normal, resting pace after you stop exercising. It’s the difference between your peak heart rate during exercise and your heart rate at a set time after you stop (typically one to two minutes). A value of 20 beats per minute is considered good, and higher is even better.

Maximal oxygen consumption (VO2 max). This value is the maximum amount of oxygen a person can use during intense exercise. It can be measured directly when a person runs on a treadmill with an oxygen mask in a lab. Some wearables estimate it based on an algorithm that uses data such as your MHR, HRR, pace, weight, and sex. VO2 max is a powerful predictor of cardiovascular health. “The absolute number may not always be accurate, but the trends can be useful. If your VO2 max rises over time, that’s a strong sign your training is improving your fitness,” says Dr. Guseh.

Heart rate variability (HRV). This value is a measure of the variation in time between heartbeats — differences that are just fractions of a second. More variability (a higher value) suggests better heart health, because it reflects the heart’s ability to respond quickly to rapid changes occurring throughout the body. Most wearables report this value, but there isn’t a recommended target because it varies widely depending on your age, sex, fitness level, and medical history. However, it can be useful to track trends in your HRV over time. HRV often falls after a period or stress or illness but then bounces back — a sign that you’re good to go back to exercising, says Dr. Guseh.

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Exercising after a heart disease diagnosis

Anyone who’s had a heart attack, heart surgery, or other heart disease diagnosis should attend cardiac rehabilitation, a personalized program of supervised exercise and heart-healthy lifestyle coaching. It starts with an exercise stress test, which involves closely monitoring your heart during exercise to tailor an effective yet safe exercise program for you.

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“Cardiac rehab is a tried-and-true method of helping people get back into shape, with a standardized protocol that works well for most people,” says cardiologist Dr. Sawalla Guseh, assistant professor of medicine at Harvard Medical School. However, people who were previously exercising at higher intensities and therefore quite fit may get bored at cardiac rehab because it’s too easy for them, he says. If that’s the case for you, consider requesting a referral to a sports cardiologist, who can provide more rigorous and detailed testing and advice, including a specific heart rate threshold you should be careful not to exceed.



Image: © Oscar Wong/Getty Images

Fitness

Prepare for Ski Season With These Workouts

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Prepare for Ski Season With These Workouts

Skiing can be a whole lot of fun when the snow starts flying. But your body can take a beating on the slopes if it’s not properly prepared.

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Sports medicine specialist Molly McDermott, DO, shares how to get ready for ski season with some workouts and strategies.

Ski training routine

Some elite skiers start training at the tail end of spring — about six months before they ever hit the slopes. Others may need less time. In general, Dr. McDermott recommends training at least six to eight weeks before your first outdoor adventure.

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As part of your routine, you’ll want to focus on ski workouts that build:

  • Strength
  • Endurance
  • Flexibility
  • Neuromuscular control (also known as muscular coordination)

Trying to jump into a sport when you haven’t intentionally trained is difficult and challenging, says Dr. McDermott. That’s especially true given the physical demands that come with skiing.

“You want to train your brain, nerves and muscles to really build stability and balance so you can have more control over how you jump and land,” she notes.

Ski exercises

Ski-focused training puts a strong emphasis on lower-body exercises, targeting everything from your glutes to your ankles. But you’ll want to take a full-body approach to ski exercises, which means working on your core and upper body as well.

“You’re going to have to make real-time decisions when you’re out on the slopes,” stresses Dr. McDermott. “You’ll need to strengthen your whole body to be able to do things like pivot or change direction, keep your balance, propel yourself forward and withstand the impact of skiing.”

Dr. McDermott recommends starting with just bodyweight exercises if this is your first go at it. More experienced athletes can focus on higher weights or machines. In general, she recommends doing three sets of 10 to 15 reps each. Then, as you work through your training, you can progressively load your weight, sets, reps or how long you exercise to continue building strength and endurance.

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Here are some workouts that lend themselves to skiing.

Dynamic warm-up

Warming up before any workout is key, especially right before you hit the slopes. The International Ski and Snowboard Federation agrees. Dynamic warm-ups and cool-downs are highly effective for preventing injury and improving performance.

Consider starting and ending your ski workout with five to 10 minutes of:

  • Jogging
  • Using an elliptical
  • Walking on a treadmill

“You’re warming up your muscles and then stretching them, as opposed to static, cold stretching,” explains Dr. McDermott.

Squats

“Squat maneuvers help make sure you have the coordination of your nerves and your muscles working together so your muscles are strong and keep your body aligned — in particular, keeping your knees from turning in,” says Dr. McDermott. “As squats become easier, you can progress to squat jumps.”

  1. Stand with your feet shoulder-width apart with your toes pointed slightly outward.
  2. Hinge at your hips, bend your knees and slowly lower your body (as if sinking into a chair).
  3. Lower until your thighs are parallel to the ground, keeping your knees in line with your toes and your weight on your heels.
  4. Hold the position for three to five seconds.
  5. Shoot up quickly to your starting position by pushing through your heels.
  6. Repeat this process for 10 to 15 reps.

Side-lying hip abductors

Hip abductor exercises help with skiing because they focus on balance, control and building strength in your hips, glutes and thighs.

  1. Lie down on your side with your legs extended straight. Your right leg should be on top of the other and you should rest your head on your left arm.
  2. Keeping your hips steady, lift your right leg so your knees are no longer touching. You should feel a stretch in your upper thigh and hip.
  3. Slowly lower your right leg.
  4. Repeat for 10 to 15 reps, then switch sides and continue.

Calf raises

Calf raises help improve ankle mobility and calf strength — all needed for those quick turns while skiing.

  1. Stand with your feet hip-width apart, with your arms hanging at your sides.
  2. Slowly lift the back of your heels until you’re standing on the balls of your feet.
  3. Hold this position for one to two seconds before lowering back down.
  4. Repeat for 10 to 15 reps.

Skater hops

“Skater hops are single-leg hops from side-to-side,” describes Dr. McDermott. “These are really going to help you in certain ski maneuvers.”

  1. Stand with your feet hip-width apart and your hips and knees bent at a 45-degree angle.
  2. Push off the floor with your left leg so that you jump to the side, landing on your right leg.
  3. Keep your knees bent and your left leg crossed behind your right (as if you’re skating).
  4. Then, jump back to the opposite side, crossing your right leg behind your left.
  5. Repeat this process in quick succession for 10 to 15 reps, jumping as fast and far as you’re able.
  6. To maintain momentum, it helps to swing your left arm forward as you’re pushing off with your left leg and vice versa.

Shoulder shrugs

“Shoulder shrugs are a good ski exercise because they help build the upper trapezius muscles that connect with your neck,” says Dr. McDermott. “They really work on your posture.”

  1. Start by standing tall, feet hip-width apart.
  2. While looking straight ahead, lift both of your shoulders and slowly roll them backward in a circle for 10 seconds.
  3. Repeat the process by circling your shoulders in the opposite direction for 10 seconds.

Chin tucks

Chin tucks involve a gentle range of motion to improve posture and strengthen neck muscles.

  1. While sitting or standing in a relaxed position, look straight ahead and lightly touch the bottom of your chin with your index finger.
  2. Gently pull your head and neck back so your chin moves away from your finger.
  3. Hold this tucked-chin position for up to 10 seconds before slowly extending your head and neck forward to the starting chin position.
  4. Repeat this process for 10 to 15 reps.

Push-ups

“Push-ups are good for strengthening your shoulders, chest and core, which helps with balance and stability when you’re skiing,” says Dr. McDermott.

  1. Kneel on all fours with your palms flat on the floor in front of you and your fingers facing forward. Hands should be shoulder-width apart and directly below your shoulders.
  2. Lift your knees off the floor and straighten your legs.
  3. Bend your elbows and tuck them to your sides as you slowly lower your chest and chin to the floor.
  4. Push through your palms until your arms are fully extended. Don’t let your hips or back dip to the ground — your head, spine and butt should all be aligned.
  5. Repeat this process for 10 to 15 reps.

Planks

This exercise targets your wrists, forearms, core and upper body — all areas that promote stability and strength while skiing.

  1. Get into a push-up position, with your legs extended and your elbows directly beneath your shoulders.
  2. Hold this upright push-up position for 10 to 15 seconds, with your abs engaged and butt and back aligned.
  3. For a modified challenge, you can lower your knees to the floor while holding this position.
  4. For a deeper stretch, you can rock your hips back and forth, or lower down to your elbows for a low plank.

Bridges

Bridges help strengthen your glutes, which help guide and direct your skis.

  1. Lie on your back with your knees bent, feet on the floor and arms at your sides.
  2. Squeezing your butt and abdominal muscles, push through your heels to slowly lift your hips toward the ceiling.
  3. Keep your back straight and your arms pressed into the floor at your sides.
  4. Hold this position for a few seconds, before slowly lowering your hips to the floor.
  5. Repeat this process for 10 to 15 reps.

Oblique twists

Also known as a Russian twist, this exercise focuses on your abdominal muscles and core strength. It helps with skiing because it supports your ability to rotate, turn and move quickly.

  1. Sit on the floor with your knees bent and your feet flat.
  2. Lean back at a 45-degree angle and squeeze your abdominal muscles.
  3. Extend your arms out straight in front of you and clasp your hands together.
  4. Engage your core as you twist slowly to the right as far as you feel comfortable, moving your arms in the direction you’re turning.
  5. Return back to center, pause and then twist to the left side.
  6. Repeat this process for 10 to 15 reps.

Cardio exercises

Skiers can also benefit from cardio exercises that get their blood flowing and build aerobic endurance, like:

  • Cycling
  • Running
  • Swimming
  • Rowing

“Build cardiovascular and low-impact activities into your training routine to help improve your performance and increase your endurance,” advises Dr. McDermott. “Some days you can break it up into sets or you can do 30 minutes straight.”

A note before hitting the slopes

A big part of ski training is getting your body acclimated to cold-weather exercises. For athletes who live in areas where winter runs strong, it helps to train early and get that outdoor exposure as temperatures begin to drop during the fall.

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Others who live in warmer climates might benefit from taking cold showers, ice baths or lowering indoor temperatures weeks before heading out on a ski trip.

Once ski season begins, make sure you warm up before heading outdoors, stay hydrated and keep moving to keep your body warm.

“When you’re skiing, a lot of unexpected things happen,” cautions Dr. McDermott. “The weather changes and things happen really fast. So, you want to be physically and mentally prepared before you hit the slopes, making sure you’ve got the right equipment, the right clothing and you’re prepared in case of injury.”

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Forget the gym — you just need 20 minutes and 2 dumbbells to strengthen your whole body with this workout

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Forget the gym — you just need 20 minutes and 2 dumbbells to strengthen your whole body with this workout

One of the harder parts of committing to a training routine is knowing where to start, and that’s true of those who have never trained regularly before as well as more experienced people coming back after a break.

This 20-minute workout from fitness trainer Lindsey Bomgren, founder of Nourish Move Love on YouTube, is perfect for easing your way into a training routine, especially if you’re coming back from a break because of illness or any other reason.

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Fitness

Ditch sit-ups and crunches — this 5-move standing abs workout will help you build a stronger and more sculpted core

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Ditch sit-ups and crunches — this 5-move standing abs workout will help you build a stronger and more sculpted core

The beauty of a standing abs workout is that you do not need a mat, much space, or to get down on the ground for any of the exercises. That makes it easy to fit into a busy day, whether you are working out at home, short on space, or prefer to stay off the floor altogether.

None of that means it is easier or delivers fewer results. Pilates instructor and Balance Body Educator Portia Page built this five-move, all-standing core workout to show that you can still challenge your abs effectively without a mat or traditional floor exercises.

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