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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 12 reviews
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Product Reviews
★★★★★ 4
Soild
Size: Medium
The orange and blue ball is perfect. Once start taken because the because the blue noisy one was a little to easy for my dog to start ripping pieces off. Will say most toys do not survive his chewing.
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Reviewed in the United States on January 24, 2026
★★★★★ 5
Aggressive chewer who loves fetch approved!!
Size: Medium, Size: Medium
I highly recommend the Chuck-It brand in general, especially for dogs with an aggressive bite. These balls are awesome and are the most durable balls I’ve bought for my 50 lbs lab mix. He has not been able to break one of them yet and we’ve had a few of the squeaky balls for months. They are a bit pricey but worth it.
The one in the pic has been used for months, lives outside and you can see it’s still in great shape.
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Reviewed in the United States on June 22, 2025
★★★★★ 5
Good quality dog ball for playing fetch
Size: Medium
My dog and family love these chuck it balls to play fetch with our dog. They are durable and fun. They squeak which is added fun for any dog! Regular tennis balls my dog chews apart and they get pretty gross after playing and being left outside. These can be easily washed off and cleaned. These balls last! Would recommend to anyone with a dog and would purchase again.
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Reviewed in the United States on April 17, 2025
★★★★★ 5
Tough and sturdy
Size: Medium
Have lasted my dog for years now and she is a tough chewer. Worth the money
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Reviewed in the United States on December 12, 2025
★★★★★ 5
Picky dog approved!
Color: S6-muti-color, Color: S6-muti-color
I have wasted so much money on dog balls that they won't even pick up! They finally were obsessed with the Kong rubber green/blue or red/blue ones, but they're $3+. each, and they break from the dogs squishing it. I honestly had zero expectations on these, and they BOTH picked them up on the first throw! That's huge!!
Seem to work fine in the ChuckIt.
As for the squeaker, at first I was like "Oh nooooo." when they both loudly started! Much to my (and my neighbors') happiness, the squeakers stopped working after a couple minutes. 🤣
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Reviewed in the United States on February 2, 2025