High Intensity Interval Training RunExcess Post Exercise Oxygen Consumption (EPOC) is an increased rate of oxygen intake following intense exercise.

Particularly effective is high intensity interval training or HIIT, as well as resistance exercises.

Post exercise the body goes into a state of recovery where, oxygen (EPOC) is used to restore the body to a resting state and adapt it to the exercise just performed.

Why Is High Intensity Interval Training (HIIT) Useful For Effective Weight Loss?

EPOC results in an elevated calorie consumption. In response to exercise, fat stores are broken down and free fatty acids are released into the blood.

The oxidation of free fatty acids as fuel and the energy consuming re-conversion of FFA’s back into fat stores (a futile cycle) both take place. If you are trying to create a calorie deficit then this will help.

How long will EPOC last? The effect is greatest on the first few hours post exercise and reduces over time.

It may last up to 48 hours depending on the intensity of the exercise performed, so if you exercise 3-5 times per week then you will benefit from EPOC calories daily!

Do All Types Of Exercise Create EPOC?

Studies show that the EPOC effect exists after both strenuous anaerobic exercise and more gentle aerobic exercise, however if comparing the two, anaerobic exercise has the greatest EPOC effect.

In practical terms for greatest fat loss anaerobic exercise in the form of high-intensity interval training is significantly more effective despite sessions being shorter and consuming less calories at the time!

So how do I benefit from EPOC? Exercising on a regular basis is going to keep your EPOC high through the week.

For greatest effects on fat loss it is advised to do high intensity interval training link 20-40second sprints for shorter periods rather than long slow exercise sessions like jogging. Training this way saves you time and gives better fat loss results too!

I hope this is helpful. If you want more advice on effective weight loss just get the free plan on the right of the page, or get online personal training here. Please share this if you like it too. Have a great workout!

About the Author Nico Valla

Your Success in Health, Fitness, and Life Starts Here—Personalised Support for Real People

I get it—life is hectic, and putting your health first isn’t always easy. As a busy business owner, teacher, and dad of three, I know how overwhelming it can be to find balance. But I also know that you deserve to feel confident, energised, and in control of your well-being.

Since 2008, I’ve helped people who’ve struggled their entire lives with their eating and movement habits find sustainable ways to make positive changes. My approach isn’t about perfection or quick fixes; it’s about meeting you where you are, understanding your unique challenges, and creating realistic strategies that fit your life.

Whether it’s losing weight, boosting self-confidence, or just feeling good when you walk into a room, I’m here to guide you with empathy, experience, and a no-judgement attitude. Together, we’ll work on building habits that support not just your body, but your mind, relationships, and overall success.

You’re not just another client; you’re someone with a unique story, and I’m excited to be part of your journey. Let’s make this the year you finally prioritise yourself—without sacrificing everything else.

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