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A consultant got fit and ran his first marathon at 52. These 3 things helped him make exercise an enjoyable habit.

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A consultant got fit and ran his first marathon at 52. These 3 things helped him make exercise an enjoyable habit.
  • Jason Smith didn’t exercise for years and got fit when he was 49.
  • Smith is now a personal trainer who regularly strength trains and runs.
  • He started by committing to an hour of daily movement and going slow.

A man who got fit at 49 and ran his first marathon at 52 shared the three things that helped him get in shape.

Jason Smith, 55, a personal trainer based in the UK, strength trains five times a week, and goes on four runs. Six years ago, his life looked very different. He worked a corporate job, did little to no exercise, and mainly ate ultra-processed microwave meals — and his health suffered.

In his 40s, Smith started to feel more lethargic and had less energy, he told Business Insider.

“I was overweight to the point of obesity, unwell, and in a pretty bad way physically and mentally,” he said.

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In January 2019, a friend posted online about “an adventure” he was going on, which included cycling up hills and running through fields.

Smith thought: “That’s how I want to feel. That’s how I want to live.” It “flicked a switch” in his brain and he committed to changing his lifestyle then and there.

“I started to do a lot more research into nutrition. I decided I wasn’t going to drink alcohol anymore, and I also decided that I was going to get fit and that I would take that seriously,” he said.

After two weeks of moving more and eating a more nutritious diet he noticed a difference in himself, and he kept progressing.

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“I felt so liberated, so different. I was enjoying it and I was loving life. It was a massive mental shift in me as well as a physical shift in me,” he said.

Two years later, he decided he wanted to help others feel the same way. For his 50th birthday in January 2019, Smith’s family bought him a personal training qualification course, and by the end of 2020, he was working with his first clients.

Smith shared how he approached getting fit at 49.


Jason Smith running a marathon

Smith ran his first marathon at 52.

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Jason Smith



1) Have a clear goal

In the past, there were several instances where Smith had started working out, stuck to it for a week or so, and stopped when life got in the way. Having a clear goal helped make exercising regularly a sustainable goal.

Before hitting the gym or loading up his plate with veggies, Smith visualized his ideal self and wrote two lists: one detailed the things his future self would do, and the other the things he would stop doing. “The first thing that I did was get my mind in the right place,” he said.

This helped him create a plan and motivated him to follow it. “Having that vision in my head and almost this plan of what I would and wouldn’t do really, really helped,” he said.

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Visualization is a technique that successful people including Steve Jobs and Michael Phelps have used, and has been linked to improved decision-making and emotional regulation.

2) Find something you enjoy

Finding a form of exercise you enjoy is key to making being active a habit, Smith said.

“You’re not going to do anything that you don’t enjoy,” he said.

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He recommended thinking back to what you loved doing as a child. “I used to enjoy running through the woods, so funnily enough I went running through the woods and that made it a lot easier,” he said.

Because Smith enjoyed what he was doing, he looked forward to his runs and in April 2022 he ran his first marathon in three hours and 55 minutes.

3) Start slow and build up


Jason Smith on a rowing machine

Jason Smith started getting fit at age 49.

Jason Smith

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When he first decided to get into fitness, Smith committed to doing an hour of movement everyday, but he started slow.

“Certainly, for the first couple of weeks or more, running was really walking with an occasional running spurt in between,” he said.

He joined his local gym and started with simple movements like lunges and squats, adding more as his fitness improved. He also had an introductory session with a personal trainer who showed him the correct form to avoid injury, which he said was helpful.

“It’s not how hard you work in the hour or the 45 minutes that you might be doing a workout that really counts. It’s how many times you do that,” he said.

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Five exercise swaps you should consider for more muscle growth, says a fitness expert

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Five exercise swaps you should consider for more muscle growth, says a fitness expert

Just because an exercise is considered a ‘classic’ or everyone on the gym floor is doing it, doesn’t necessarily mean it’s the best for muscle growth. While there are lots of exercises out there that are effective for hypertrophy, there are some that are arguably ever so slightly better, due to the fact that they’re easier to progressively overload, or are more convenient, time-wise.

If you’ve started to hit a plateau in your training or feel your gains have been somewhat minimal, then it may be time to switchup your programme. Exercise Researcher, Dr. Pak Androulakis-Korakakis, has shared five exercises in a recent YouTube video, that he’s stopped doing for muscle growth, and some smart swaps you can try instead to unlock better (and hopefully bigger) results…

Barbell back squat

(Image credit: Getty Images)

The barbell back squat is hailed as the king of lower body exercises – like, if you don’t do it, who are you? But is it best for honing in on your quads? Dr. Pak would disagree. “Barbell squatting, in my opinion, is not the most time-efficient way to blast your legs, and can feel ‘meh’ given that it overloads your spine.” It’s also not the safest exercise to go all out to failure on.

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Mitochondria and aging: Why HIIT is the game-changer for fitness and longevity

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Mitochondria and aging: Why HIIT is the game-changer for fitness and longevity

The mitochondria are considered the ‘powerhouses’ or ‘engines’ of your cells. As Dr. Terry Wahls points out, most chronic diseases involve dysfunctional mitochondria. Poorly functioning mitochondria play a big role in disease risks, a slower metabolism, and the aging process. Researchers have concluded that exercise improves mitochondrial quality and function and stimulates mitochondrial turnover. It’s time to start thinking about these little organelles that have a big impact on our wellness and longevity.

Exercise for your mitochondria

Additional research also revealed that just 12 weeks of resistance exercise training yielded qualitative and quantitative changes in skeletal muscle mitochondrial respiration. Not only did resistance training increase lean body mass by 4% and quadriceps muscle strength by 15%, but staying committed to those 12 weeks of training also improved the respiratory capacity and functioning of the mitochondria.

So, which exercise is superior for improving mitochondrial functioning? Which exercise results in the most dramatic positive cellular changes? Let’s dive into the research.

The study

In a study published in Cell Metabolism, the researchers explored how different types of exercise — resistance training, high-intensity interval training (HIIT), or a mix of both — change muscles and cells at the molecular level in younger and older adults. The researchers focused on how genes and proteins respond to exercise, how exercise impacts the mitochondria, and how these changes affect overall fitness and metabolism.

The study methods

For 12 weeks, younger and older adults completed one of three exercise programs: traditional resistance training, HIIT, or a mix of both at a lower intensity. The researchers measured fitness and VO2 peak, insulin sensitivity, muscle mass and strength, mitochondrial health and function, and changes in gene activity and protein levels in muscle.

The results

Here are the study results:

  • HIIT has the biggest impact in improving aerobic fitness, insulin sensitivity, and mitochondrial function, compared to other workouts. These results were especially noticeable for older adults.
  • HIIT reversed some age-related declines in muscle mitochondria and enhanced the cell’s ability to make new proteins.
  • HIIT enhanced mitochondrial capacity by close to 50% for young adults and nearly 70% in older adults.
  • Resistance training mostly helped build muscle mass and strength, but didn’t have as much of an impact on aerobic fitness or mitochondria. The combined training resulted in smaller and moderate benefits compared to just doing HIIT alone.

Changes at the molecular level

HIIT caused significant increases in gene activity and protein-building machinery. Most of the benefits from exercise take place after the genes send their signals during the protein-building stage. HIIT improved protein quality and helped reduce damage to muscle proteins, which helps the body build new and efficient mitochondria.

Concluding thoughts

This study shows that HIIT is one of the most powerful ways to improve muscle health and fitness even in later years. This type of exercise, which involves shorter bursts or intervals of higher-intensity movements, is superior for the mitochondria and helps your body make more and better mitochondria, which can slow age-related decline and boost your energy levels.

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What an Oncology APP Should Know About Exercise in Cancer Care | Oncology Nursing News

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What an Oncology APP Should Know About Exercise in Cancer Care | Oncology Nursing News

Oncology advanced practice providers (APPs) should be aware of the transformative potential of exercise in cancer care and how to get patients started with a feasible exercise plan, said Daniel Glidden, MS, PA-C.

Ahead of his presentation at JADPRO Live 2025 on evidence-based diet and exercise tactics for patients with cancer, Glidden spoke with Oncology Nursing News about the key evidence APPs should be aware of, as well as actionable changes that can be made to incorporate exercise in patients’ care plans.

What data supports exercise as an essential part of cancer care?

For the longest time, we’ve had observational data that associates exercise and proper nutrition with improved survival, but it’s always been observational data. Now we have the first randomized, controlled trial—the phase 3 CHALLENGE trial (NCT00819208)—that shows us the true overall survival and disease-free survival benefit of a structured exercise program after adjuvant chemotherapy for colorectal cancer.

This was a phase 3 randomized controlled trial that randomized patients into either receiving health education materials alone or receiving health education materials plus a structured exercise program where they would go in for a supervised exercise and also have either in-person or virtual visits to talk about behavioral change to increase their exercise. What they found, of course, was that people in that exercise group had increased physical fitness in terms of their VO2 max and their 6-minute walk test and so on, but also that their disease-free survival was significantly improved. Around the 8-year mark, there was a [7%] improvement in disease-free survival in the patients in the intervention group. There was also an overall survival benefit.

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Do the CHALLENGE data set a standard for all types of cancer care?

This is the first randomized control trial to show the true survival benefit that exercise can confer, at least in this patient population. We can’t extrapolate those data to all different cancers, but we have some good observational data that tells us that that there’s improved survival in many different cancers with exercise. As more of these studies come out, we’ll see more that exercise truly can be helpful for survival in cancer.

What level of exercise should patients with cancer be told to follow?

The general guidelines for people with cancer to start seeing health benefits from exercise are to get between 150 and 300 minutes of moderate-intensity aerobic exercise per week. Moderate-intensity aerobic exercise is a brisk walk where, if you’re walking with a friend, you can have a good conversation with them, but if you tried to sing a song, you’d get out of breath. That’s a good “talk test” for moderate intensity exercise. We recommend that [routine], plus 2 to 3 days per week, getting resistance training of the major muscle groups for about a half hour at a time.

How can exercise plans be personalized for each patient?

The first step is finding out what people are doing. Are they exercising regularly? Are they exercising somewhat or completely sedentary? If they’re completely sedentary, I wouldn’t tell them to just go right off and exercise to those guidelines. We would want to start off slow and do a stepwise approach. …For many of our patients, cancer is not their only chronic condition, and there may be other safety issues like their neuropathy or bone [metastases] or poor bone health in general that we must take into consideration when we’re creating an exercise prescription.

What should all oncology APPs know about exercise in cancer care?

Exercise counseling is something that [oncology APPs] can integrate into their clinical visits. I want them to know that the true benefit of exercise is not just something that we can do, it’s something that we should be doing, all of us. If exercise was a medicine in a pill form, it would be something that we would all be lining up around the corner at our doctor’s offices to get a prescription for. Really, exercise truly is medicine.

What is integrative oncology, and what made you choose this field?

Integrative oncology is a patient-centered approach to cancer care that looks at the whole patient and combines their conventional cancer care with other treatment modalities like exercise; nutrition; stress management; and mind-body therapies like yoga, tai chi, and meditation to take care of the whole person.

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I started off my career working first in emergency medicine, then in medical oncology. While I was working in medical oncology, I saw that we were doing a great job treating the cancer. We were winning the battle more and more, but there’s still a person there who needs to be taken care of, and that person was undoubtedly cared for by their cancer team. But there is certainly more that can be done.

I made the transition into integrative oncology at Dana-Farber so I could spend my entire clinical practice emphasizing and optimizing health, wellness, and quality of life. I will see people for consults and people come to me for different reasons. Sometimes it’s for treatment-related adverse effects. In those cases, we talk about how can acupuncture be helpful? For hot flashes, joint pains, or neuropathy, how can exercise, proper nutrition, and stress management be helpful?

This transcript has been edited for clarity and conciseness.

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