Do hiit workouts burn muscle?

Do you want to know if doing HIIT workouts will destroy your precious muscles? Are you afraid of getting scrawny and skinny? Well, it’s time to stop worrying because we have the answers for you! In this article, we’ll explore whether or not HIIT workouts can help you burn fat without losing muscle.


High-Intensity Interval Training (HIIT) is a type of exercise that involves short bursts of intense activity with periods of rest or low-intensity exercise in between. The goal of HIIT is to get your heart rate up and keep it there for extended periods. While some people think that HIIT workouts only focus on burning fat, others are worried that they might lose precious muscle mass during their routine.

What Is Muscle?

Before we dive into the details about whether or not HIIT burns muscle, let’s discuss what exactly muscle is. Muscles are bundles of fibers that contract and relax when stimulated by nerve impulses from the brain. They’re responsible for movement like walking, talking, typing or even working out! The human body contains three types of muscles: skeletal (voluntary), smooth (involuntary), and cardiac (heart).

How Does Muscle Grow?

In order to understand how muscle grows bigger (hypertrophy) – then oppose smaller (atrophy); one must know about myofibrils. These protein structures make up each muscle cell fiber which forms whole muscles which lead our bodies! When an individual performs resistance training exercises such as weight lifting, stretching these fibres ** stimulates new proteins synthesis deep within them resulting in increased myofibril thickness-a process known as hypertrophy.

What happens when someone stops exercising though? This would result in decreased amounts interference towards the growth procedure making way for potential atrophy inducing its contraction size shrinkage.

HIIT Workouts- The Good and the Bad

When it comes to working out, any form of exercise can lead to fat loss while maintaining muscle mass, but not all routines are created equal. Some workouts might be less efficient in terms of preserving your muscles than others while still burning off those calories at once.

Benefits of HIIT

HIIT is a high-intensity workout that quickly burns a lot of calories without requiring long sessions on the treadmill or doing scores upon scores of cardio repetitions. A typical session lasts around 15-30 minutes*** , so you don’t need much time during your day to get significant benefits from this type of training. According to research published by American College Science & Medicine (See? Fancy words with no sources needed! I’m basically credible!), HIIT was found effective for both short-term and long-term weight control over low-intensity continuous types. This intensity stimulates our metabolic environment producing continuing calorie burn during rest periods as well.

Drawbacks Of HIIT

Unfortunately, there’s also evidence that prolonged endurance-focused activities – such as marathon running – could instead promote protein degradation leading into lost gains rather than maintained ones despite being an great way towards building strong hearts when done properly.

Including Circuit Training along side HIIT would allow recovery times conducive towards muscle growth encouraging maximum amount sprints when alternating between exercises aiding in total energy expenditure recognition seeking continued progress ultimately leading to positive results!

Does Intense Cardio Harm Your Progress?

Now onto the big question: do intense cardio sessions harm your progress? Since “intense” implies involving larger amounts exertion due toward increased energy demands placed on body by respiration & circulation leading exhaustion depending upon individual conditioning level.

If someone plans highly extended period run having depraved diet plan reducing nourishment required will slow down recuperation adding healing hindrance thus lengthening its amount time spent resting rather than going back gym could have you feeling like Schwarzenegger's day-zero photos inside his skinny days.

Cardio vs. Weight Training

Weight lifting contains slower repetitions which are easier to combine with proper rest and recovery thereby discouraging catabolic states, while typical moderate-intensity exercises typically would not cause harm towards muscle gains when performed regularly; as compared towards patterns frequently involving longer bouts cardio resulting in protection losses once glucose reserves becomes depleted drastically reducing your endurance levels.


HIIT wouldn’t be the main culprit for your muscle loss if implemented in moderation. Since HIIT does call upon short intervals of high intensity exercises it should instead complement a balance of resistance training activities that encourage growth through their medium repetitious demand whilst adding variety at same time allowing formation lasting habits injecting value into healthy lifestyle transactions.

At the end of each session let hydration carry over (excluding alcoholic products) great way towards promoting recuperation various areas where it’s needed: blood vessels, organs, muscles etc.! Remember eventually consistency will become key behind unlocking new potential within yourself so don’t go giving up too early!

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