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This Popular Celebrity Workout Actually Has Science to Back It

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This Popular Celebrity Workout Actually Has Science to Back It

Lack of time is often the main reason people don’t exercise regularly. But a type of interval workout recently popularized by actress Jessica Biel could be the solution – with research showing it can improve fitness faster than traditional, steady-pace workouts, such as jogging or cycling.

The Norwegian 4×4 workout has traditionally been used by athletes. It’s a form of high-intensity interval training (Hiit) that involves four-minute sets of very intense cardio exercise, followed by three minutes of very light exercise.

A typical training session includes a five-minute warm-up, four high-intensity intervals and a five-minute cool-down.

Related: There’s One Simple Trick to Boost The Health Benefits of Your Run

The 4×4 workout format follows the same format as other Hiit workouts, which alternate periods of high-intensity exercise with periods low-intensity exercise (or rest). Most Hiit workouts involve work intervals that last anything from ten seconds up to a couple of minutes. In contrast, the 4×4 workout employs four minute work periods, which raises your heart rate for longer than most Hiit protocols.

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Decades of research has shown that regular Hiit workouts are often more effective than moderate-intensity workouts (such as running or cycling at a steady pace continuously) in improving cardiovascular fitness and other health outcomes (such as improving blood sugar and cholesterol levels). Hiit is even effective for improving health in adults with type 2 diabetes and cardiovascular disease.

Hiit also offers these benefits with less training time than traditional endurance training. A 2008 study showed that as few as six Hiit sessions over two weeks improved the muscles’ endurance capacity.

Several studies have also explored the benefits of the 4×4 protocol. For example, an eight-week study showed that the 4×4 workout produced greater aerobic fitness improvements than 45-minute moderate-intensity running sessions.

The reason the 4×4 workout specifically is so effective for improving cardiovascular fitness is because the four-minute intervals are intense enough to maximally challenge your heart and lungs while minimizing muscle fatigue. This helps improve your maximum oxygen uptake (or VO₂ max), which is the highest rate at which your body can take in, transport and use oxygen during intense exercise.

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VO2 max is considered the gold standard measure of cardiovascular fitness. Higher VO₂ max values are associated with reduced risk of cardiovascular disease and premature death, and better overall health.

During a 4×4 workout you’ll spend roughly 16 minutes close to you maximum heart rate. This means that it can improve VO2 max more effectively than longer duration, moderate-intensity workouts.

Woman on stationary bike as seen through gym quipment
The intensity of the 4×4 workout can improve your cardiovascular health. (Mike Cox/Unsplash)

Choosing the right workout

For people with busy schedules, Hiit is a time-efficient option because it offers the same health and fitness benefits as longer workouts with less training time. However, a 4×4 Hiit session still lasts between 35–40 minutes, which might be too long for some people.

For those seeking a shorter workout option, the 10×1 Hiit protocol is a suitable alternative as it can be completed in just 30 minutes – including warm-up and cool-down periods.

This involves doing ten one-minute intervals of intense exercise. Each minute of hard work is followed by a minute of light exercise or complete rest.

But while this protocol also improves VO₂ max, the shorter work periods must be performed at a much higher intensity than the four-minute intervals to challenge the cardiovascular system. This could make it difficult to pace yourself consistently during each interval.

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Another Hiit workout option is sprint interval training. This involves exercising as hard as possible for ten to 20 seconds – followed by three minutes of recovery. These sprints can be done running, cycling or even rowing.

One 12-week study found that participants who performed three, 20-second sprints (followed by three-minute recovery periods) just three times a week significantly improved their cardiovascular fitness compared to those doing longer, steady-state workouts.

However, the 4×4 workout has been shown to produce better gains in aerobic fitness than sprint interval training.

Although most research shows that Hiit produces rapid health and fitness benefits, it’s difficult to know exactly how effective it is in the real world because most studies use specialized equipment and are supervised by researchers. As such, study results may not reflect what happens when people train on their own.

The very demanding nature of Hiit may also make it less enjoyable for some people – particularly those who aren’t used to intense exercise. This is important, because lower enjoyment is linked to poorer motivation and lower likelihood of sticking to a workout program.

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Also, while Hiit is often promoted as exciting and time efficient, its novelty may wear off. What feels new and motivating at the start may become tiring or repetitive, especially without variety or support. As a result, some people may struggle to stick with a workout program after a few weeks.

Long-term fitness improvements come from training consistently. For that reason, it’s essential to choose a form of exercise that you enjoy.

If Hiit is less appealing to you than alternatives, such as steady jogging, cycling or weightlifting, it may be more effective to focus on workouts you’re more likely to stick with.

You don’t always have to push yourself to the limit to improve your health and fitness. Even consistent activity, such as accumulating around 7,000 steps a day, can still lead to meaningful physical and mental health benefits.

The Norwegian 4×4 protocol is just the latest popular Hiit workout. While it can offer many health and fitness benefits for you in a short period of time, it might not suit your needs – so be sure to pick a workout that best suits your goals and schedule.The Conversation

Paul Hough, Lecturer Sport & Exercise Physiology , University of Westminster

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This article is republished from The Conversation under a Creative Commons license. Read the original article.

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Flexibility expert recommends doing this for three minutes daily to improve mobility

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Flexibility expert recommends doing this for three minutes daily to improve mobility

Longevity is something of a buzzword right now, and the idea of living better for longer is undoubtedly appealing. Mobility is a key component of this.

By definition, mobility is the ability to move freely, something that tends to deteriorate as we age. But there are simple things we can do to maintain it.

One of them is “joint flossing”, a daily practice recommended by experienced coach and mobility specialist Darren Ellis.

“Mobility is a conflation of strength and flexibility,” he says. “I always used to believe that strength was the foundation of everything in exercise. But if you’re strong and you can’t move through a decent range of motion at certain joints, you’re still suffering.

“When you reach down to pick something up from the floor and it seems further away than it used to be, you suddenly realise how crucial mobility is.”

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Below, Ellis explains how to use his three-minute joint flossing protocol to help ease stiff joints and improve your ability to move.

How to try joint flossing

The body works on a rough “use it or lose it” basis. If you rarely move a joint through its full range of motion, the tissues around it can become tight, stiff and sore. The natural remedy for this is gradually reintroducing movement in the affected areas.

“The easiest place to start when improving mobility is to get the joints moving more freely with some simple joint circles,” says Ellis. “I sometimes call it joint flossing because, firstly, you are flossing nutrients through the joint by promoting blood flow in this area, and secondly, it’s something you should do regularly.”

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You start with neck circles then work your way down your body from your head to your toes, as shown in the video above – if something can move, you move it.

Ellis recommends doing five to 10 repetitions per body part, using a controlled tempo and a range of motion that feels safe and comfortable for you.

“There’s no need to force anything,” he says. “You’re just giving your body a chance to move again.”

Doing this consistently will improve your physical capacity and mobility, allowing you to return to other movements and exercises over time.

Read more: Five stretches you should be doing every day, according to a flexibility expert

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Best pull-up bars for home workouts

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Best pull-up bars for home workouts
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Should you sync your exercise time to your chronotype?

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Should you sync your exercise time to your chronotype?

A new study suggests that exercising at times that match whether someone is naturally a morning or evening person could reduce their risk of heart problems.

Researchers in Britain and Pakistan determined the chronotypes of 150 people aged between 40 to 60 through questionnaires and 48-hour core body temperature measurements.

Chronotype refers to the tendency to be naturally more active or wakeful at a particular period of the day.

All participants in the study – which was published in the journal Open Heart – had at least one cardiovascular risk factor, such as high blood pressure, obesity or physical inactivity, and were randomly assign-ed to exercise at times that either aligned with their chronotype or did not.

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Workouts were scheduled either in the morning (8am-11am) or evening (6pm-9pm).

Out of the group, 134 participants completed all 60 exercise sessions.

Over 12 weeks, the study found that both the matched and mismatched groups show-ed improvements in heart risk factors, aerobic fitness and sleep quality.

However, it discovered that those who exercised in alignment with their chronotype experienced greater reductions in blood pressure.

They also demonstrated better improvements in measures such as heart rate, aerobic capacity and sleep quality, compared to those whose exercise timing did not match their natural preferences.

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In light of these findings, we spoke to Nuffield Health personal training lead Sam Quinn in Britain, to find out whether or not he thinks we should all sync our exercise with our chronotype.

What are the main categories of chronotypes?

Chronotypes are often simplified into “morning larks” (early birds) and “night owls” (evening types).

“Morning people or early risers are people who find that their energy levels are optimal first thing in the morning and often find that they are more productive during the first part of the day,” says Quinn.

“Whereas, a night owl, or someone who is more of a night person, would be someone whose energy levels are optimal later in the day or the evening.

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“These are generally people who like to stay up late and maybe into the early hours in the morning.”

What are some benefits of trying to sync exercise with your chronotype?

“The main benefit is that it can help you stay consistent with your exercise,” says Quinn.

“We’ve all got busy lives and everyone’s got different preferences, but the best programme is going to be the one that you’re going to be able to stick to.

“For example, if you set a workout programme where you have to go to the gym at eight o’clock in the morning and you’re a night person, you might fail before you’ve even started.

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“However, if you select a time which is more suited to your preferred time of day and your body clock, where you feel more energised and it works better for your schedule, you’re going to be much more consistent and much more likely to achieve your goals, whether that’s improving your mental health, an aesthetic goal or a performance-related goal.”

Early birds benefit best from exercising in the morning before going to work.

Are there any signs that might indicate someone is working out at the “wrong” time of day?

“I think the main physical signs to look out for are to do with energy levels and performance,” says Quinn.

“For example, someone’s output might be affected.

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“They might be struggling to train that day, are not turning up consistently and are struggling to hit their designated reps or loads, therefore might not be able to accomplish their physical goals in the gym.

“Also, sometimes, people look visibly deflated.

“Their energy levels are depleted, they’re looking lethargic and might not be engaging with conversation.

If someone is feeling lethargic and tired, they’re not going to get the most out of their session and they’re not going to enjoy it.”

What other factors might affect your energy levels during workouts?

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The quantity and quality of your sleep can have a big impact on your energy levels during a workout.

“If you’re training regularly, but you’re not sleeping and recovering adequately, you’re not going to be energised and are not going to be able to perform at your best during your workouts,” highlights Quinn.

Stress can also sabotage your workouts.

“I would say that lifestyle-related stress is one of the biggest factors that impacts people’s energy levels, focus, motivation and frequency of workouts,” he adds.

“When people come in to train, they might vent about their work-related stress and might only get through 50% of the work that was planned for that session.

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“So, stress can be a really big obstacle.”

Fuelling yourself adequately is also key.

“Make sure that you’re recovering appropriately from your workouts with the correct nutrition and are fuelling yourself appropriately, depending on what your goal is,” says Quinn.

ALSO READ: Here’s the proper way to fill your ‘tank’ for exercise

“Try to educate yourself on these variables that are going to impact your goals – such as your sleep, nutrition, hydration and recovery – so that you can utilise all of this to help you to achieve your long-term goals.” 

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How can someone figure out what their chronotype is and find a routine that works for them?

“Many people think they are a morning person or have read that the best time of day to train is the morning, but when they train in the morning they feel tired and lethargic,” says Quinn.

“Some people also don’t sleep as well because they’re anticipating trying to get into the gym in the morning.

“I find that many people want to be a morning person, but actually train much better in the afternoon or the evening, when they’ve had a couple of extra hours of sleep.”

Sometimes finding a routine that works for you takes a bit of time.

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“Finding the right time to train and exercise can take a bit of trial and error, and can sometimes take quite a long time to figure out,” he says.

“Be flexible and try a few different times to see what’s optimal for you, what works with your lifestyle and what is going to enable you to be consistent over time.”

When figuring this out, listening to how your body and mind feels can help guide you.

“I regularly have to communicate with my clients and ask them, ‘How are you feeling? Is this the most suitable time for you?’” he adds.

Most importantly, Quinn reminds people to choose a type of activity that they actually enjoy and will stick to.

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“Find out what type of exercise you actually enjoy and that you are going to be consistent with,” he recommends.

“It doesn’t have to be strength training – it could be a dance class or yoga or endurance running.” – By Camilla Foster/PA Media/dpa

ALSO READ: Figuring out the best time to exercise

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