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What kind of body does HIIT give you?

Author

Emily Ross

Published Jan 17, 2026

Overall, HIIT produces many of the same health benefits as other forms of exercise in a shorter amount of time. These benefits include decreases in body fat, heart rate, and blood pressure. HIIT may also help lower blood sugar and improve insulin sensitivity.

Can HIIT shape your body?

HIIT can help you lose fat

Interestingly, it found that both HIIT and traditional moderate-intensity exercise can reduce body fat and waist circumference ( 13 ). A range of other studies also indicate that HIIT can reduce body fat despite the relatively short time commitment ( 14 , 15 , 16 ).

What HIIT does to your body?

The benefits of HIIT include burning calories, losing weight, and building muscle. HIIT can also help you lower blood pressure and blood sugar, while improving oxygen and blood flow. HIIT may also benefit brain health by improving mental health and memory.

Does HIIT burn belly fat?

Can HIIT reduce stomach fat? The answer is yes, according to a 2018 meta-analysis, which looked at 39 studies involving 617 subjects. “HIIT significantly reduced total (p = 0.003), abdominal (p = 0.007), and visceral (p = 0.018) fat mass,” the study's authors said.

What are 5 benefits of HIIT?

HIIT benefits

  • HIIT can burn a lot of calories in a short amount of time. ...
  • Your metabolic rate is higher for hours after HIIT exercise. ...
  • HIIT can help you lose fat. ...
  • You might gain muscle using HIIT. ...
  • HIIT can improve oxygen consumption. ...
  • HIIT can reduce heart rate and blood pressure. ...
  • HIIT can reduce blood sugar.
18 related questions found

Does HIIT make you toned?

HIIT (High-Intensity Interval Training) is very effective for getting lean because you benefit from both an aerobic and strength-building workout. If your goal is to get lean and build a strong and toned physique, there's no better option than a high-quality HIIT workout.

How soon will I see results from HIIT?

If you are looking to increase cardiovascular fitness and VO2 max, HIIT can offer results in 6-8 weeks. If you are looking to lose fat using HIIT, the results are 100% dependent on your ability to place yourself in a calorie deficit, which HIIT can help with, but is not the only factor involved in weight loss.

What happens if you do HIIT everyday?

HIIT is the perfect way to condense the benefits of activity into 30 minutes or less. But when it comes to an intense exercise like HIIT, doing it every day, or for periods longer than 30 minutes can put you at risk for injury, overtraining, mental burnout, and prevent muscle recovery.

Will HIIT make me bulky?

But doing too much HIIT, or the wrong type of HIIT exercises, can cause you to gain unwanted bulky muscle. If you're a mesomorph or endomorph body type, and you're overdoing it on the leg exercises (squat jumps, burpees, jump lunges, etc.), you might see your legs starting to get bulky, rather than slimmer.

Is HIIT better than cardio?

HIIT is definitely better at burning calories and helping you shed unwanted pounds. The biggest reason is the anaerobic form of exercise. It burns more calories than cardio both during and after exercising. This phenomenon is called the afterburn effect, or excess post-exercise oxygen consumption (EPOC) effect.

Does HIIT build lean muscle?

HIIT may not be the most effective workout routine to build lean muscle mass. HIIT, however, can help preserve or retain lean muscle mass, while MICT can potentially make you lose lean muscle mass if you're trying to lose fat mass at the same time.

How do I know if HIIT is working?

5 Ways To Know You're Going Hard Enough With HIIT

  1. Are You Out Of Breath? When you're doing HIIT, you shouldn't be able to hold a conversation. ...
  2. Is Your Heart Rate Increasing? ...
  3. Are You Feeling The Burn? ...
  4. Are You Keeping It Short And Simple? ...
  5. Are You Adding Restorative Work To Your Routine?

How much weight can you lose in a month doing HIIT?

Adding HIIT to your routine can be an incredibly effective tool to lose 10 pounds in a month. In fact, one study in nine men compared the effects of HIIT to running, biking and resistance training, demonstrating that a 30-minute HIIT session burned 25–30% more calories than the other activities ( 33 ).

Is HIIT same as cardio?

The definition of anaerobic is “without oxygen.” Unlike aerobic cardio that uses oxygen to break down energy stores and produce ATP, HIIT cardio is performed in an oxygen deficit. This means your body breaks down glycogen in the muscles to produce ATP — the energy currency of the cell.

What are the disadvantages of HIIT?

Cons of HIIT

It's a highly demanding form of training and can put strain on the body if you don't have a reasonable training base behind you. If a progressive training program is not followed overuse of HIIT can lead to over training and increased injury risk.

Does HIIT build muscle or burn fat?

HIIT burns fat first and more than it builds muscle. This is partly due to it being a cardiovascular exercise, and cardio exercises burn more calories than strength training. You can still build muscles with HIIT programs, but you won't see the same gains as you would from resistance exercises.

How many minutes of HIIT should you do a week?

Our partners at Les Mills and the research they've commissioned suggest 30-40 minutes a week with your heart rate above 90 per cent. That translates on average to two 30 to 45-minute HIIT workouts a week.

Is HIIT or running better for belly fat?

HIIT running was more effective than HIIT cycling for reducing total body fat, while lower intensities (below 90 percent maximum heart rate) produced better results in terms of abdominal and visceral fat loss.

What should you eat after a HIIT workout?

Because HIIT can deplete this stored glycogen, it's crucial to replenish carbohydrates post workout as well. The closer to a workout one eats, the more ideal it is to choose quicker digesting, simple carbs like white rice, quick oats, banana, and dried fruit like dates and figs.

How often should I do HIIT to lose weight?

'To lose fat, high intensity interval training is the best way, you should be opting for 10-20 second intervals for eight reps with one minute rest,' he said. Lloyd suggests the ideal length of time for a HIIT workout session is 25 minutes for anywhere between two-four times a week.

Why do I feel so good after HIIT workout?

A HIIT of Endorphins

They did one at rest, one after an hour of moderate-intensity exercise and another one after a high-intensity interval training (HIIT) session. What they found was that HIIT significantly increased the flow of endorphins in the brain, particularly to the areas that control pain and emotions.

What is the HIIT zone?

The HIITZone is for group classes led by a trainer. It's one-of-a-kind and designed just for Crunch. In the class, you do short intervals of exercises and then move to the next station. (FYI: HIIT stands for “high intensity interval training.”)

Is HIIT good for skinny fat?

You Do Too Much Cardio

But, HIIT will help take you from skinny fat, to shredded. High-intensity interval training (HIIT) is a mode of exercise training that consists of resistance and circuit training. HIIT is one of the best exercise methodologies to burn body fat.

Is HIIT better than strength?

Focus: While strength training does support fat burning, cardio vascular health, and mobility, HIIT workouts are better at it. HIIT also triggers higher levels of excess post-oxygen consumption or EPOC, which is the afterburn effect that keeps burning calories for hours after you finish the workout.

Can HIIT replace running?

“Numerous research studies have shown that HIIT programs can yield similar cardiovascular improvements when compared to more traditional, steady-state exercise programs, like running or cycling,” Kusmiesz said.