No Time for Cardio? How to Do Interval Seconds of Running

Interval running might just be the ultimate workout hack, mixing short bursts of your fastest or almost fastest running with recovery periods, giving major fitness results in way less time than traditional cardio.

Almost a third of adults still don’t move enough.

The top excuse? Not enough time. That’s where interval running comes in — it delivers serious results fast.

What is interval running?

Interval running is built on the idea of high intensity interval training (HIIT).

Maybe you’ve heard that before. Well, it’s time to hear it again if you’ve been putting off exercise in the name of not having enough time.

It’s all about alternating between short, intense bursts of effort and easy recovery periods (casual walking or a slow jog).

Instead of doing burpees or pushups, interval running uses the same approach — fast, powerful sprints followed by slower-paced recovery segments.

The goal is to challenge your body, force it to adapt, and build endurance faster than steady-paced jogging or brisk walking ever could.

The 10-20-30 Method

Jog slowly or walk slowly for 30 seconds, pick up to a moderate run for 20 seconds, then go all-out for the final 10 seconds.

Repeat this cycle several times, rest and do another round if you’re up for it.

 

The Fartlek Method

During your normal jog, randomly throw in short sprints — like running hard to the next mailbox or parked vehicle — then slowing down until you’re ready to go again.

Other “let’s go!” markers could be a short incline on a path, a street light or a park bench.

It’s flexible, fun and keeps your workouts from getting stale.

The Science Behind the Sweat

Plenty of studies show that interval-style running is incredibly effective for your heart, metabolism and body composition.

In research on overweight subjects, sprint intervals (or one’s fastest, even if technically it’s not a sprint) actually improved cardiovascular fitness more than did jogging at a steady pace.

Participants who sprinted increased their VO₂ max — a measure of how efficiently your body uses oxygen — much more than those who did jogging at a fixed pace.

  • If you can run or jog at a fixed or steady pace, this is nowhere near your fastest run.
  • By definition, “steady” or “fixed” means easy effort to moderate effort, rather than intense or strenuous.

Faster Metabolism, Better Health

Interval running does more than just boost endurance — it improves how your body handles energy.

Alternating between sprints and recovery helps regulate blood sugar levels and can reduce the risk of type 2 diabetes.

It also helps optimize how your cells use energy, improving how your body generates energy.

Over time, that leads to better blood pressure, healthier cholesterol and less “bad” LDL.

How much time are we talking per week?

Just 18 minutes of sprint (or your best all-out intervals), three times a week, can produce noticeable changes in your health and fitness.

  • This is NOT too good to be true.
  • You absolutely need to kick ass during those seconds of “sprinting.”

How to Get Started with Seconds Interval Running

If you’re new to interval running, start easy. Outdoors, you could sprint between two particular houses or buildings, then walk or jog to the next one to recover.

I myself have used empty nighttime parking lots as markers.

You can also use a treadmill — but if you hold on during the sprint intervals, you’ll defeat the purpose!

I recommend manual adjustments because this way you can set the speed to what’s a true, kickass interval for your abilities.

Intervals can be as short as five seconds or as long as a minute.

But you’ll get even more glorious results if you run faster over a shorter time (no human can run their fastest for one minute, which is why 100-meter sprint athletes can’t maintain their top speed even for the 200 meter dash).

The key is to push yourself to about 90% of your max effort during the sprint segments, then take enough time to recover before the next burst.

Lorra Garrick is a former personal trainer certified by the American Council on Exercise. At Bally Total Fitness, where she was also a group fitness instructor, she trained clients of all ages and abilities for fat loss and maintaining it, muscle and strength building, fitness, and improved cardiovascular and overall health. 

Even Neurotypicals Are Still Learning About Eye Contact

Researchers looked into the timing of eye contact, not just how it’s done.

The study, led by cognitive neuroscientist Dr. Nathan Caruana and his team at Flinders University’s HAVIC Lab, asked 137 typical participants to complete a block-building task with a virtual partner.

They found that the best way to signal for help was a simple three-step gaze.

  • Look at the object
  • Next look at your partner’s eyes
  • Then look back at the object

This sequence made people most likely to interpret the gaze as a request for assistance.

Dr. Caruana explains that it’s not just about how often someone makes eye contact, it’s the context of the eye movements that really counts.

The paper points out that participants responded the say way whether the gaze came from a robot or a human.

This shows that the human brain is wired, naturally, to detect social cues regardless of source.

This kind of insight could change how tech is designed and trained.

If robots and virtual assistants can mimic the subtle nonverbal signals that people naturally use, interactions with them could feel far more natural and intuitive.

Dr. Caruana explains that this decoding of such an instinctive behavior can help build better connections with typical people in a variety of contexts, as well as with autistic individuals.

The HAVIC Lab is also pursuing other elements that influence how we interpret gaze, including how long eye contact lasts and whether it’s repeated.

Hopefully the researchers will take a look at how typical people navigate eye contact as they’re approaching someone they know from a distance, such as in a long corridor at the workplace or in a college dormitory.

Many autistic people find this scenario troublesome to navigate.

The paper concludes that the subtle signals of eye contact are the “foundation of social connection.”

Smarter technology with better training can be designed based on better understanding of this foundation.

Lorra Garrick has been covering medical and fitness topics for many years, having written thousands of articles for print magazines and websites, including as a ghostwriter. She’s also a former ACE-certified personal trainer. In 2022 she received a diagnosis of Level 1 Autism Spectrum Disorder. 
Top image: ©Lorra Garrick

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ADHD: Impulsivity, Distraction AND Innovative Thinking!

Ever notice how people with ADHD often come up with the wildest, most original ideas?

Scientists are starting to confirm what many already suspected — that ADHD’s “wandering mind” might actually be fueling creativity.

Before angrily ordering that distracted child to sit still and keep their hands quiet, maybe put some art supplies before him or her and see what happens!

Research presented at the European College of Neuropsychopharmacology (ECNP) congress in Amsterdam found a clear link between ADHD, creativity and mind wandering — when your thoughts drift off on their own little adventure.

The study, led by Han Fang from Radboud University Medical Centre in the Netherlands, is the first to explain how ADHD and creativity are connected.

Fang says in the report that past research has possibly linked the wandering mind in ADHD to creative juices, but there’d been no investigation into whether there’s a direct connection.

To dig deeper, Fang’s team ran two separate studies — one in Europe and another in the UK — involving a total of 750 participants.

Some had ADHD and some didn’t. Studying two different groups allowed the researchers to cross-check the results and make sure the findings were solid, not just a coincidence.

When the Mind Wanders, Magic Happens

Everyone’s mind drifts sometimes — like when you realize you’ve been daydreaming in the middle of a meeting or zoning out while on a treadmill or stationary bike.

And unfortunately, daydreaming can also occur while driving.

But for people with ADHD, this kind of mental detour happens way more often.

The researchers wanted to know if that constant stream of thoughts might actually spark more creative ideas.

The team looked at how ADHD traits — like inattention, impulsivity and a tendency to switch focus quickly — interacted with imaginative thinking and mind wandering.

Not surprisingly, participants who had stronger ADHD traits also reported higher levels of mind wandering.

But not all wandering minds are the same. The report points out that there are actually two main kinds.

  • Spontaneous mind wandering – when your thoughts drift without you realizing it, like spacing out mid-task, while showering or in between sets at the gym.
  • Deliberate mind wandering – when you let your mind drift on purpose, on a more conscious level.

Both types can fire up ideas, but deliberate wandering — when you consciously give yourself permission to drift — might be especially powerful for visionary thinking.

Measuring Creativity

To measure creativity, researchers used standard tests — for example, asking people to come up with innovative uses for ordinary objects, like a paperclip or a brick.

The more original or flexible their ideas, the higher they scored on creativity.

Across both studies, people who had more ADHD traits also tended to score higher on creative achievement.

The researchers found that deliberate mind wandering played a big role — the more someone intentionally let their mind explore different thoughts, the more creative they were.

Mind wandering, especially in a purposeful sense, was tied to higher creative flow in ADHD’ers, says the report.

Turning a “Distraction” Into an Advantage

What’s exciting about this research is that it could actually help shape better support for people with ADHD and de-stigmatize this neurodivergent condition.

For example, programs could be designed to help people channel spontaneous ideas into imaginative projects, turning what’s often seen as being “scatterbrained” into being original or ingenious.

On the therapy side, mindfulness-based approaches could be tweaked for ADHD — not necessarily to eliminate mind wandering, but to help people guide it in more productive directions.

This kind of approach could help reduce some of the daily challenges that come with ADHD while boosting the natural creativity that often accompanies it.

The report mentions that more research is needed to confirm the findings.

ADHD Strength

Many of the most groundbreaking thinkers — inventors, artists, entrepreneurs — have admitted to having restless, easily distracted minds. Maybe this was their ADHD.

The very thing that makes focusing hard might also make it easier to think outside the box, connect unrelated ideas and come up with fresh perspectives.

This sounds like a feature of Level 1 autism (minimal support needs), and in fact, some traits of Autism Spectrum overlap with those of ADHD. This includes hyperfocus. Yes, ADHD comes with hyperfocus, despite the distractibility component.

So maybe the next time your mind drifts off mid-conversation or you catch yourself daydreaming instead of ticking off your to-do list, don’t be too hard on yourself.

That mental detour could be your brain’s way of connecting dots no one else even sees.