Go hard or go home

High-intensity interval training, more commonly known as HIIT, is a cardiovascular exercise strategy that pairs brief bursts of intense anaerobic exercises with even shorter recovery periods. The science behind the workout method claims its effectiveness due to the fact that it can increase your metabolism rate, driving the body to torch fat furiously. For the most enervating yet adrenaline-inducing HIIT workout classes in Singapore, turn to these eight fitness studios listed below. It’s time to clock in your cardio people.
 

Barry’s Bootcamp Singapore
 

You’ve probably already heard a great deal about this famed Los Angeles workout studio and its notorious red room that holds some of the most gruelling HIIT classes ever (which we survived, BTW), as it made headlines when it first arrived in Singapore. Typically, a Barry’s Bootcamp session alternates between floorwork and treadmill, to give your body the ultimate burn. Rest assured that the payoff is worth both the pain and cost.
 

F45
 

An Aussie original, the concept of F45 is pretty straightforward. Train functionally for 45mins at a go; elements of HIIT as well as circuit training are worked into the mix. Think battle rope exercises, prowler pushes and rowing machine moves. The franchise also places a large emphasis on team training, so feel free to enroll in classes with friends.
 

Field Assembly 
 

Expect to be pushed beyond your limits at Field Assembly. Both their training facilities (one at Holland Village and another at Clarke Quay) are equipped with some of the best gym gear around for productive workouts. Their schedule is also jam-packed with other types of classes, so apart from HIIT, try your hand at jiu-jitsu, muay thai, yoga and even strength training sessions.  
 

The Garage
 

A short brisk walk from Beauty World MRT will get you to The Garage, a gym that specialises in HIIT and circuit training. They’ve got a total of six different HIIT workout classes, from those that focus on strength, to others that target fat loss at an advanced level. If you're unsure which classes might suit you, just check out their page, that comes adorned with full descriptions of all the classes they provide. To aid you further, there are also videos to give you insights into the various trainings, plus a scale that indicates the intensity levels of the workouts.
 

Ground Zero
 

You may already be familiar with famed boutique gym parlour Ground Zero thanks to their spin classes and second studio at China Square Central. Now, head down to their spanking new location to partake in any of their four Resistance (HIIT) classes, such as Build, a hypertrophy workout laced with interval training; Power, that entails plyometrics and heavy compound exercises; Endurance, which focuses on cardio; and finally, Showdown, that combines the best of the former three. The last one also doubles as a competition, so choose to participate for a chance to earn prizes.
 

Haus Athletics
 

Found within fitness studio-ridden mall Downtown Gallery, Haus Athletics offers just three, HIIT-inspired workout classes, activating and targeting various muscle groups. While Leanout is a strength-based HIIT class, Meltdown is cardio-based, and Kore focuses on the back, glutes and abs. Besides an in-house juice bar that serves detoxifying green beverages, Haus also allows you to make purchases for water and other drinks after you book a slot online, so they’ll have everything ready for you once you arrive for your workout.
 

The Jungle
 

A ClassPass favourite and popular CBD gym, head to The Jungle to try their signature Jungle HIIT, designed to improve strength, conditioning and even muscle development. They also offer a Boxing HIIT option, where bag striking, martial arts conditioning and core and body exercises take centrestage. Both classes are suitable for participants of all fitness levels and experience.
 

Ritual
 

Branded as the ultimate 30min gym, Ritual now has three locations in Singapore, with two in the CBD and one at Holland Village. They pride themselves on having legitimate coaches, not glorified timekeepers (their words, not ours), as well as being able to raise your metabolic rate for fat burning that lasts up to 48 hours. But that’s not all. Besides getting your own clean, individual 40 sq ft “pod” that comes equipped with dumbbells, kettlebells, medicine balls, pull-up rings and suspension trainer, you’re also entitled to freshly-laundered sets of workout clothes, at no additional costs.