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Top 3 Benefits of Interval Training

24th November 2023

24th November 2023

By Hannah Belsham

Do you ever feel like your fitness routine is stuck in a rut, or that you're not getting the results you desire? If so, it might be time to shake things up and give interval training a go. This science-backed workout strategy has taken the fitness world by storm in recent years, and for good reason too. Interval training (IT), offers a dynamic and effective way to transform your fitness level, but how do we get the most of this approach and how’s best to use IT to get fit?

Understanding the Science of Interval Training:

Interval training is all about alternating between short bursts of intense exercise with brief periods of active recovery or rest. This cycle is repeated, and is what makes this training a powerful way to improve physical fitness, physiological functions and cardiovascular disease risk.

  • High-intensity interval training (HIIT), whereby efforts elicit ≥90% of maximal oxygen uptake or >75% of maximal power.
  • Sprint interval training (SIT), a more intense version of HIIT with efforts above VO2 max or maximal power.
  • Repeated-sprint training (RST), characterised by performing a high number of sprints with a shorter recovery interval.

The Top 3 Benefits of Interval Training:

1. Fat Burn Furnace:

Current research is in favour of the elevated burning of calories in HIIT based exercise to that of its steady-state counterparts, especially if it combines both weight based and aerobic activities. This is thought to stem from the effect of HIIT on our metabolic rate, and it’s pretty neat ability to shift our body’s metabolism to burn fat as opposed to carbs even after we’ve completed the workout. Meaning along with a healthy-balanced diet, the inclusion of this super strategy could
be the perfect accomplice for weight loss.

2. Cardiovascular Supercharge:

Interval training is not just about torching calories; it's also a bonus for your heart health. Those intense intervals help improve your cardiovascular fitness by bettering your heart rate and strengthening your heart's ability to pump blood effectively. This translates to improved cardiovascular function and decreased risk of disease.

3. Time-Efficient Workouts:

In today's fast-paced world, time is precious. The beauty of interval training is that it offers these great results in a short amount of time. A typical session can range from just 20 to 30 minutes, making it a highly efficient choice for busy individuals. With it being so short and snappy you are also more likely to get a sense of enjoyment out of this training type, with its constantly changing stimuli and short length.

Getting Started with Interval Training:

So, how can you harness the power of interval training for your fitness journey? Here's your action plan:

1. Warm Up:

Always begin with a thorough warm-up to prepare your muscles and joints for the
intensity ahead. A warm-up session of 5-10 minutes can include light jogging, dynamic stretching, or mobility exercises.

2. Choose Your Intervals:

Determine the duration and intensity of your high-intensity intervals.
These should push you to around 80-90% of your maximum effort. The recovery periods should be less intense, allowing you to catch your breath.

3. Variety is Key:

Keep things interesting by mixing up your exercises. Whether it's sprinting, cycling, or bodyweight exercises, the key is to engage different muscle groups to prevent monotony and keep your body challenged.

4. Safety First:

Pay attention and listen to your body. While pushing your limits is essential, safety
always comes first. Ensure proper form and alignment to reduce the risk of injury.

5. Cool Down:

Wrap up your session with a cool-down period to gradually lower your heart rate and prevent dizziness or fainting. Stretching and controlled breathing are excellent ways to achieve this.

Adding an interval-based training to your weekly workout can revitalise your fitness routine and improve overall wellbeing. The science-backed benefits and the time-efficiency of interval training makes it an ideal choice for today's busy lifestyles. So, gear up, embrace the intensity, and let interval training unlock your fitness potential. Your body will thank you, and you'll be well on your way to achieving your fitness goals.  

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From the Bedroom to the Gym: Is Your Sex Life Affecting Your Workout Performance?
The relationship between sex and workout performance is one that’s long been debated by scientists and fitness fanatics alike. It’s complicated and multifaceted, so answering the question of whether your sex life is affecting your training is difficult. That said, today we’re going to take a look at a variety of evidence, both academic and anecdotal, as well as several different scenarios and at least try to reduce some of the mystery around the subject. First, it helps to understand what’s actually happening to the body, both physically and psychologically, during both activities.   The Effects of Sex on the Body Sexual activity causes several changes to occur in the body:   Physical Changes That Occur During Sex During sexual activity and the lead up to it, the human body undergoes a process known as the sexual response cycle. This is the case for both males and females, though the cycle can be highly individual and may not be the same each time for each person. Describing the full sexual response cycle is beyond the scope of this article, however it consists of 4 phases: Desire Arousal Orgasm Resolution Factors such as elevated heart rate, increased blood flow and pressure and heightened muscle tension all come into play. If you’d like to read about the sexual response cycle in more detail, check out this great article from Cleveland Clinic.   Psychological Changes That Occur During Sex Several psychological changes occur both during and after sex. Most notable are the release of endorphins and oxytocin, which are associated with improved mood and a better sense of wellbeing. These are also responsible for reduced stress levels, which brings a multitude of additional benefits that are of particular interest to those of us participating in regular training and exercise. Cortisol, the hormone responsible for stress, is catabolic in high levels, meaning it can cause the breakdown of lean tissue. So, whilst it is unclear whether sex itself affects workout performance, the reduction in stress levels it may bring is definitely beneficial for preserving our results!   The Effects of Exercise and Training on the Body Exercise and training also cause the body to undergo a number of changes. These occur both during and after the physical activity. There are in fact a number of similarities in changes that happen during exercise and sex:   Physical Changes That Occur During Exercise The physical changes that happen in the body vary based on the type of exercise being undertaken, however, there are some that are common to exercise in general: Increased heart rate Increased blood flow, especially to the muscles Faster, deeper breathing due to additional oxygen needs Heightened activity within the circulatory, respiratory, musculoskeletal and endocrine systems A full summary of the changes that occur within these systems can be found here. More aerobically demanding exercise will, of course, place greater emphasis on the circulatory and respiratory systems as well as causing fat to be metabolised as an energy source. Resistance training, which often relies more heavily on the lactate and creatine phosphate energy systems, instead promotes greater muscular and endocrine (hormone) activity. Note the common physical changes between sex and exercise here, as they do crossover!   Psychological Changes That Occur During Exercise The psychological changes that occur during exercise are similar to those experienced during sexual activity and are mostly related to the release of endorphins and other ‘feelgood’ hormones. These help to regulate mood, and it is common knowledge that frequent exercise and leading an active, healthy lifestyle promotes a feeling of wellbeing.   Does Sex Affect Our Workouts? This is where things become complicated. Though extensive studies have been done on the subject, the results of these have varied massively. We must also take into account the experience of individuals, and this anecdotal evidence again has huge variance. Let’s look at both:   Sex and Training: What the Science Says Scientific studies on the relationship between sex and training are contradictory at best. There’s no denying the positive benefits of both activities, particularly from a psychological perspective, but as for the effect of sex on actual performance in the gym the results are inconclusive. A study, published in April 2021, by Kirecci, Albayrak and co. examined the effects of sexual activity of 50 men in the 24 hours prior to training on lower body strength. The study measured effects by having the men perform 3 separate squat sessions, each at the same time of day. Each of these sessions occurred after participating in or abstaining from sexual activity the night before. The men performed 5 sets of 5 repetitions of their maximum squat weight during these sessions and the difference in weight lifted was observed. The study concluded that ‘sexual intercourse within 24 hours before exercise [has a] detrimental effect on lower extremity muscle force, which suggests that restricting sexual activity before a short-term activity may be necessary.’ Aside from this study, most others found either no notable relationship between sex and athletic performance. A meta-analysis of 9 crossover studies, conducted by Zavorsky and Brooks and published on 16 September 2022, confirms this. The analysis concluded that ‘The results demonstrate that sexual activity within 30 min to 24 h before exercise does not appear to affect aerobic fitness, musculoskeletal endurance, or strength/power.’ This is perhaps more notable, because these studies incorporated different types of exercise and were not restricted purely to a strength/power based activity like squats.   Anecdotal Evidence: What About the Experiences of Real Gym Goers? The anecdotal evidence is, as expected, highly individualised. However, there tends to be a bias against the results of most studies, particularly in those participating in sports involving strength and aggression. For example, many fighters claim that they perform better when they abstain from sex in the days leading up to a contest. Similarly, bodybuilding forums are full of debate on this topic and many claim they note a significant decrease in motivation to train at maximum intensity after sexual activity. It has been hypothesised that this may be due to a downregulation in testosterone production after sex; during orgasm the mineral zinc is released in the body and this is also a precursor for natural testosterone production in the body and may, therefore, provide some reasoning as to the experience of many trainees.   Key Takeaways The relationship between sex and workout performance will always be a complicated one. The effects of one on the other in terms of physical fitness and, in particular, mental wellbeing, are clear, but when it comes to actual performance this appears to be highly individual. We’d advise doing what feels best for you but not worrying too much about it. Instead, prioritise your nutrition and make sure you’re fuelling your workouts properly. While you’re here, why not take a look at the Innermost range? We’re proud to be completely transparent about the ingredients in our products and we always ensure they’re of the highest quality. Check us out, and be sure to get in touch if you have any questions! Read more