--- title: Celeb Trainer Anna Kaiser Shares Her HIIT Workout description: Watch and follow along as celeb trainer Anna Kaiser of AKT in Motion shares her favorite high-intensity interval training, HIIT, workout. canonical: https://time.com/5315347/hiit-workout-anna-kaiser/ author: Anna Kaiser article:opinion: false article:content_tier: free article:published_time: 2018-06-19T17:16:52.000Z article:modified_time: 2026-04-13T08:58:02.733Z og:title: Try This Fun HIIT Workout to Get Fit and Increase Your Endurance og:description: 'After completing this routine, everything else will seem easy' og:url: https://time.com/5315347/hiit-workout-anna-kaiser/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt5f703be5e8a2ce3e/6989335f929fadd005bf0dd4/hiit-workout_anna-kaiser_akt-fitness.png?branch=production&width=1200&quality=75&auto=webp&crop=16:9 og:image:width: 2795 og:image:height: 1572 og:image:alt: HIIT Workout by Anna Kaiser of AKT in Motion og:type: article twitter:card: summary_large_image twitter:title: Try This Fun HIIT Workout to Get Fit and Increase Your Endurance twitter:description: 'After completing this routine, everything else will seem easy' twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt5f703be5e8a2ce3e/6989335f929fadd005bf0dd4/hiit-workout_anna-kaiser_akt-fitness.png?branch=production&width=1200&quality=75&auto=webp&crop=16:9 ---  # Try This Fun HIIT Workout to Get Fit and Increase Your Endurance > Sponsored content. 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Worth Your Time is TIME's culture newsletter, published Tuesdays and Saturdays to 40,000 subscribers as of August 2026. #### Who writes TIME's culture recommendations? Culture editor Eliza Berman writes Worth Your Time, drawing on TIME's critics and culture desk. #### Is Worth Your Time free? Yes. It is a free newsletter available at time.com/newsletters. by [Anna Kaiser](https://time.com/author/anna-kaiser/) ## Anna Kaiser Jun 19, 2018 5:16 PM UTC  Anna Kaiser of AKT in Motion HIIT Workout Anna Kaiser of AKT in Motion HIIT Workout TIME / Health.com by [Anna Kaiser](https://time.com/author/anna-kaiser/) ## Anna Kaiser Jun 19, 2018 5:16 PM UTC [High intensity interval workouts](http://time.com/4893161/hiit-high-intensity-interval-training-exercise/), also known as [HIIT](http://time.com/4750262/high-intensity-interval-training-longevity/), raise your heart rate with short bursts of intense movements. You’ll engage every muscle in your body and it’s a true power workout — one of my favorites! It’s challenging​, but since you’re only [exerting yourself for​ short period​s​ of time](http://time.com/5221282/bootcamp-workouts/), it ​flies by pretty quickly. Plus, after completing this routine, everything else will seem easy. You’re also ​working​ your whole body, instead of just isolating one particular muscle group, so you’re really getting the most bang for your buck. You’re challenging your stability, your endurance ​and your stamina all at the same time. You’ll also increase your aerobic capacity, even though it’s not a [traditional cardio workout](http://time.com/4986422/working-out-fasted-cardio-benefits/). You can keep these [workouts low impact](http://time.com/collection/guide-to-exercise/) by avoiding the jumps. ​Instead, hold on ​to the weights and move​ with intention until you’re able to perform the full routine. My favorite move here, and possibly the most challenging, is the side plank. You’re recruiting muscles that you don’t normally use, and you’re challenging your full core. Just make sure that you don’t let your hips dip, and take care to really push into that bottom foot for support. **TIP:** For the squats, make sure that ​you’re​ using your​ full range of motion and really try to get your bo​oty​ down to a​ 90-degree angle from your knee. When you’re twisting and punching, make sure you’re engaging your obliques, so that you’re not ​compensating with​ your back. _Perform this routine three to five times each week depending on your goals._ ```json [{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://time.com/5315347/hiit-workout-anna-kaiser/","mainEntityOfPage":{"@type":"WebPage","@id":"https://time.com/5315347/hiit-workout-anna-kaiser/"},"headline":"Try This Fun HIIT Workout to Get Fit and Increase Your Endurance","datePublished":"2018-06-19T17:16:52.000Z","dateModified":"2026-04-13T08:58:02.733Z","description":"'After completing this routine, everything else will seem easy'","url":"https://time.com/5315347/hiit-workout-anna-kaiser/","keywords":["motto","Living","fitness"],"thumbnailUrl":"https://static.time.com/v3/assets/bltea6093859af6183b/blt5f703be5e8a2ce3e/6989335f929fadd005bf0dd4/hiit-workout_anna-kaiser_akt-fitness.png?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","author":[{"@type":"Person","name":"Anna Kaiser","jobTitle":null,"url":"https://time.com/author/anna-kaiser/"}],"articleSection":"","image":[{"@type":"ImageObject","url":"https://static.time.com/v3/assets/bltea6093859af6183b/blt5f703be5e8a2ce3e/6989335f929fadd005bf0dd4/hiit-workout_anna-kaiser_akt-fitness.png?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","width":1200,"height":675,"headline":"HIIT Workout by Anna Kaiser of AKT in Motion","caption":"Anna Kaiser of AKT in Motion, HIIT workout video","creditText":"TIME / Health.com","representativeOfPage":true}],"publisher":{"@type":"Organization","name":"Time","url":"https://time.com/","logo":{"@type":"ImageObject","url":"https://time.com/images/logo.png","width":528,"height":156},"foundingDate":"March 3, 1923","sameAs":["https://www.facebook.com/time","https://www.instagram.com/time/?hl=en","https://twitter.com/time","https://www.pinterest.com/timemagazine"]}},{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/tag/motto/","name":"motto"}},{"@type":"ListItem","position":2,"item":{"@id":"https://time.com/5315347/hiit-workout-anna-kaiser/","name":"Try This Fun HIIT Workout to Get Fit and Increase Your Endurance"}}]}] ```