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Description
Science of Hiit: Understand the Anatomy and Physiology to Transform Your BodyTrain your way to a leaner, stronger body in half the time or less! Get ready to break a serious sweat with this scientific guide to HIIT training! Discover everything you need to know to achieve the best results from your HIIT workouts by understanding the muscle action needed to perfect each exercise. Inside the pages of this fitness book, you'll explore the physiology of more than 90 essential HIIT exercises! It is packed with: Specially
Train your way to a leaner, stronger body in half the time or less!Get ready to break a serious sweat with this scientific guide to HIIT training! Discover everything you need to know to achieve the best results from your HIIT workouts by understanding the muscle action needed to perfect each exercise.
Inside the pages of this fitness book, you'll explore the physiology of more than 90 essential HIIT exercises! It is packed with: - Specially commissioned CGI artworks depicting all the main HIIT resistance exercises -- from burpees to plank jacks -- and variations that add or reduce the challenge.
- CGI artwork features color-coding to highlight how the muscles, ligaments and joints engage, stretch and relax to perform each exercise.
- Training programs, tailored to different abilities and goals, provide suggested workouts with a progressive increase in challenges over weeks and months.
- Easy-to-follow infographics help explain the hard science behind why HIIT training is so efficient, and what beneficial physical adaptations it can bring. High-intensity interval training is a fantastic way to lose weight and get strong by performing very short bursts of targeted exercise. Recent scientific research shows that HIIT is the most efficient form of exercise for raising fitness levels and increasing cardio-respiratory health. Science of HIIT reveals the facts to help you optimize the benefits of HITT to your body and mind. The clear CGI artwork details the mechanics of each exercise, correct body posture, the muscles involved and how they engage to perform movements. You'll also learn the knowledge and tools needed to be able to create your own bespoke workouts. This HIIT guide will completely transform your performance and help you smash your goals! DK Publishing's Science of series helps readers discover the research and scientific theories behind exercise and sport. It's perfect for training at home or the gym. Other sport science books in this series include Science of Yoga and Science of Strength Training.
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4.4 ★★★★★
Based on 934 reviews
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Product Reviews
★★★★★ 5
Fetch Perfection
Size: Medium (2.5"), Style: Fetch Pack 2
If you’re anything like me, fetch is the ultimate game with your furry companion. The Chuckit! Dog Fetch Ball Medley has taken our playtime to the next level with its variety and durability. This 3-pack of medium-sized, ultra-rugged balls is perfect for endless games of fetch without worrying about wear and tear.
I love how each ball has a unique texture and color, keeping my dog engaged and excited every time. The medium size is just right for energetic dogs, allowing for long throws and big leaps. Plus, the rugged design means these balls can withstand even the most enthusiastic chewers and rough play sessions, making them a great investment for active pets.
However, the vibrant colors can sometimes make them easy to lose in green grass or sandy beaches, but a good game of hide-and-seek with your dog is a small price to pay for such fantastic fetch balls. Additionally, while they’re durable, no ball is completely indestructible, so occasional replacements might be necessary for the most aggressive players.
Overall, the Chuckit! Dog Fetch Ball Medley is a must-have for any dog owner looking to enhance their playtime. They’re fun, durable, and keep both you and your dog entertained for hours. A solid 5-star rating for their quality and variety, with a tiny star lost to their occasionally elusive colors.
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Reviewed in the United States on October 23, 2024
★★★★★ 5
great ball!
Size: Medium (2.5"), Style: Fetch Pack 2
My pitbull LOVES these. She is a power chewer and tough on balls and toys and tends to go through them insanely quick. She is still on her first ball out of this pack and its been at least two months. It is a little small for her mouth but she doesn’t seem to mind, as it has quickly become one of her favorites. Not a loud ball and it doesn’t usually make that wet chewy noise when shes going to town on it which is huge for me😂😂 Safe for my pittie so i’d imagine a smaller dog would be just fine.
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Reviewed in the United States on April 21, 2026
★★★★★ 5
Border Collie Approved: Easy to Clean, Durable, and Great Bounce
Size: Medium (2.5"), Style: Fetch Pack 2
These are the best balls out there for dogs. These fit great in the chuck-it ball launcher, which we need to wear out my border collie. They fit her mouth properly and, most importantly, do not absorb all the spit or water after a good rain. They are quick to clean off and have good weight so you can let them fly! Furthermore, they bounce well, which is perfect for my dog that likes to catch them on a bounce. The ball is a strong rubber, so should not be easy to chew up. I've used these for years, and the only time I've had to replace them is when one gets lost in the hay field. I highly suggest these as replacements for the common tennis balls.
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Reviewed in the United States on July 19, 2025
★★★★★ 4
Heavy duty.
Size: Medium (2.5"), Style: Fetch Pack 2
My dog was not interested, but it’s a good product
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Reviewed in the United States on April 11, 2026
★★★★★ 5
Treats and plenty of ball throwing with these doggie toy
Size: Medium (2.5"), Style: Fetch Pack 1
I have actually purchased these twice already. I love the one that glows in the dark but it still got lost in my yard lol. My dog is a big breed half pitt/Labrador so she did chew through one of them already. I play ball with her every single day but I DO have to take them away from her because she will destroy them. They are great to add in treats as well, that was one of the my favorite things about them as well. They do last just if you have an over zealous chewer do not let them keep them for long periods of time. They are a good value for the price. Buy them your dog will love it!
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Reviewed in the United States on August 2, 2025
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