The Surprising Ways Walking Delivers a High-Intensity Workout

Intensifying your fitness routine could come from the simplest change possible: how you put one foot in front of the other.

Walking with more intensity can burn as many calories as higher-impact activities such as running or even HIIT classes, experts say. That could mean incorporating weights, hills, intervals or a faster pace without breaking into a jog.

Reba Dodge always thought she needed to spend money on trendy workouts from spin to hot yoga to get fit. But the Maui, Hawaii-based floral designer and mother of two says she gets the best results from walking.

Over the past eight years, Ms. Dodge, 46, has experimented with ways to turn her daily fitness walk into a serious workout, including walking up a steep hill near her home, walking backwards and carrying 2-pound hand weights.

“The weights force me to engage my core more,” she says. “I’m even considering buying a weighted vest.”

Walking as a workout can provide stress relief and improve heart health. It is also one of the easiest ways to achieve the weekly physical activity—150 to 300 minutes of moderate activity or 75 to 150 minutes of vigorous activity—recommended by the World Health Organization.

“Lack of time is the number-one excuse people give for not getting enough physical activity,” says Thomas Allison, director of the Sports Cardiology Clinic at Mayo Clinic in Rochester, Minn.

He recommends people focus on the quality versus the quantity of their steps. The latest science suggests that we don’t need to take 10,000 steps a day (about 4 to 5 miles) for improved health or longevity.

Taking an 11-minute brisk walk daily will also lower your risk of stroke, heart disease and a number of cancers, according to a study from the University of Cambridge published in February.

Faster tempo

Speed up those steps and research suggests you can boost longevity. Plus, you can get the same—if not greater—calorie burn on a 20-minute walk where you incorporate intervals at a brisk pace as you would from a 40-minute walk at a leisurely pace, Dr. Allison says.

Katie Breden, 42, tries to always keep a pair of sneakers in her car. The mother of two grade-school-aged boys likes to have a backup plan for when she can’t fit in her Peloton workout. She will briskly walk laps around the field during their hourlong sports practices, or walk the perimeter of the park while they play.

“So many parents sit on the bench on their phones,” says Ms. Breden, a pre-K teacher based in Point Pleasant, N.J. “This is an easy way to squeeze in a workout, and I don’t get as sweaty as I would running or spinning, so I can go on with my day.”

Get moving

Scoring fitness gains from walking can be as easy as putting a little extra spring in your step. A study published in the British Medical Journal in December found that the lurching “silly walk” made famous in the British TV show “Monty Python’s Flying Circus” increased energy expenditure in adults by about 2.5 times compared with their usual walking style.

The researchers don’t expect people to start walking down the street high-kicking like John Cleese’s character, Mr. Teabag, says Glenn Gaesser, one of the study’s co-authors. He just hopes the study shows that you don’t need to spend a ton of money or time to burn more calories. Tiny changes in your routine can add up, especially when one is just getting back into shape.

“Upping the energy expenditure of your current movement or activity by taking higher steps a few times throughout the day can raise your metabolic rate,” says Dr. Gaesser, a professor at Arizona State University’s College of Health Solutions.

But for those looking to lose weight: Along with making healthy diet choices, you need to increase the intensity of your exercise. If jogging or running is uncomfortable on your joints, Dr. Allison suggests power walking, where you swing your arms, and race walking, where one foot remains in contact with the ground at all times.

Head for the hills

Incorporating hills into your walking routine is a low-impact way to challenge the muscles and heart more, says Abrea Wooten, senior national education manager for gym company Life Time Inc. Ms. Wooten walks uphill wearing a weighted vest on a treadmill to help train for ultramarathons. “It’s so much gentler on my joints,” she says. “The incline puts less stress on the knees.”

Treadmill walking got a huge boost of cool when social-media personality Lauren Giraldo’s 12-3-30 workout went viral on TikTok in 2020. The influencer says the workout, which involves walking on a treadmill for 30 minutes at the speed of 3 miles an hour on a 12% incline, helped her lose 30 pounds.

Ms. Wooten estimates that you can burn three to five times more calories a minute walking at an incline because of the extra work your quads and hamstrings put in. She advises gradually ramping up on the treadmill rather than jumping straight to a 12% incline. Start at 0.5% or 1% and add 1% to 2% every week.

Maintaining proper form is also important to get the most benefit and avoid injury. “If you need to hold on to the front rail of the treadmill, you should have slightly bent arms and keep your posture tall,” she says. “If you’re holding on for dear life and leaning back with straight arms, you need to ramp down the incline and pace.”

Leaning back disengages the core muscles, she says. Ideally you will find a pace that allows you to pump your arms.

Ms. Wooten suggests mixing up the types of walking you do every few months to keep the body challenged. On vacation, walk on the beach where the uneven sand works your stabilising muscles. Find a new route in your neighbourhood with rolling hills.

“Low-impact exercise does not have to be low-intensity,” she says.

For some vacationers, the ideal getaway involves $1,200 ozone therapy or an $1,800 early-detection cancer test.

Call it the longevity vacation. People who are fixated on optimising their personal health are pursuing travel activities that they hope will help them stay healthier for longer. It is part of a broader interest in longevity that often extends beyond traditional medicine . These costly trips and treatments are rising in popularity as money pours into the global wellness travel market.

At high-end resorts, guests can now find biological age testing, poolside vitamin IV drips, and stem-cell therapy. Prices can range from hundreds of dollars for shots and drips to tens of thousands for more invasive procedures, which go well beyond standard wellness offerings like yoga, massages or facials.

Some longevity-inspired trips focus on treatments, while others focus more on social and lifestyle changes. This includes programs that promise to teach travellers the secrets of centenarians .

Mark Blaskovich, 66 years old, spent $4,500 on a five-night trip last year centred on lessons from the world’s “Blue Zones,” places including Sardinia, Italy, and Okinawa, Japan, where a high number of people live for at least 100 years. Blaskovich says he wanted to get on a healthier path as he started to feel the effects of ageing.

He chose a retreat at Modern Elder Academy in Mexico, where he attended workshops detailing the power of supportive relationships, embracing a plant-based diet and incorporating natural movement into his daily life.

“I’ve been interested in longevity and trying to figure out how to live longer and live healthier,” says Blaskovich.

Vitamins and ozone

When Christy Menzies noticed nurses behind a curtained-off area at the Four Seasons Resort Maui in Hawaii on a family vacation in 2022, she assumed it might be Covid-19 testing. They were actually injecting guests with vitamin B12.

Menzies, 40, who runs a travel agency, escaped to the longevity clinic between trips to the beach, pool and kids’ club, where she reclined in a leather chair, and received a 30-minute vitamin IV infusion.

“You’re making investments in your wellness, your health, your body,” says Menzies, who adds that she felt more energised afterward.

The resort has been expanding its offerings since opening a longevity centre in 2021. A multi-day treatment package including ozone therapy, stem-cell therapy and a “fountain of youth” infusion, costs $44,000. Roughly half a dozen guests have shelled out for that package since it made its debut last year, according to Pat Makozak, the resort’s senior spa director. Guests can also opt for an early-detection cancer blood test for $1,800.

The ozone therapy, which involves withdrawing blood, dissolving ozone gas into it, and reintroducing it into the body through an IV, is particularly popular, says Makozak. The procedure is typically administered by a registered nurse, takes upward of an hour and costs $1,200.

Longevity vacationers are helping to fuel the global wellness tourism market, which is expected to surpass $1 trillion in 2024, up from $439 billion in 2012, according to the nonprofit Global Wellness Institute. About 13% of U.S. travellers took part in spa or wellness activities while traveling in the past 12 months, according to a 2023 survey from market-research group Phocuswright.

Canyon Ranch, which has multiple wellness resorts across the country, earlier this year introduced a five-night “Longevity Life” program, starting at $6,750, that includes health-span coaching, bone-density scans and longevity-focused sessions on spirituality and nutrition.

The idea is that people will return for an evaluation regularly to monitor progress, says Mark Kovacs, the vice president of health and performance.

What doctors say

Doctors preach caution, noting many of these treatments are unlikely to have been approved by the Food and Drug Administration, producing a placebo effect at best and carrying the potential for harm at worst. Procedures that involve puncturing the skin, such as ozone therapy or an IV drip, risk possible infection, contamination and drug interactions.

“Right now there isn’t a single proven treatment that would prolong the life of someone who’s already healthy,” says Dr. Mark Loafman, a family-medicine doctor in Chicago. “If it sounds too good to be true, it probably is.”

Some studies on certain noninvasive wellness treatments, like saunas or cold plunges , do suggest they may help people feel less stressed, or provide some temporary pain relief or sleep improvement.

Linda True, a policy analyst in San Francisco, spent a day at RAKxa, a wellness retreat on a visit to family in Thailand in February. True, 46, declined the more medical-sounding offerings, like an IV drip, and opted for a traditional style of Thai massage that involved fire and is touted as a “detoxification therapy.”

“People want to spend money on things that they feel might be doing good,” says Dr. Tamsin Lewis, medical adviser at RoseBar Longevity at Six Senses Ibiza, a longevity club that opened last year, whose menu includes offerings such as cryotherapy, infrared sauna and a “Longevity Boost” IV.

RoseBar says there is good evidence that reducing stress contributes to longevity, and Lewis says she doesn’t offer false promises about treatments’ efficacy . Kovacs says Canyon Ranch uses the latest science and personal data to help make evidence-based recommendations.

Jaclyn Sienna India owns a membership-based, ultra luxury travel company that serves people whose net worth exceeds $100 million, many of whom give priority to longevity, she says. She has planned trips for clients to Blue Zones, where there are a large number of centenarians. On one in February, her company arranged a $250,000 weeklong stay for a family of three to Okinawa that included daily meditation, therapeutic massages and cooking classes, she says.

India says keeping up with a longevity-focused lifestyle requires more than one treatment and is cost-prohibitive for most people.

Doctors say travellers may be more likely to glean health benefits from focusing on a common vacation goal : just relaxing.

Dr. Karen Studer, a physician and assistant professor of preventive medicine at Loma Linda University Health says lowering your stress levels is linked to myriad short- and long-term health benefits.

“It may be what you’re getting from these expensive treatments is just a natural effect of going on vacation, decreasing stress, eating better and exercising more.”