Gym Class

Low intensity training was without doubt one of the fitness trends of 2019, but while it's almost certain not wise to be HIITing it up every night of the week, sometimes you just wanted to get the most bang for your buck from a workout. 

There is a time and a place in your exercise system for an intensive session. If, say, you're short on gym time, need to let off some steam or just want to throw yourself around for the best part of an hour. 

As lifestyle writers we are often invited to review London's fitness scene, so here we've rounded up our favorites in some of which you can supposedly burn up to 1,000 calories though, of course, exactly how many you burn depends on the effort you put in and other factors like your weight. 

From hybrid gym classes of treadmill work and bursts of resistance training to relentless, killer cardio classes, if you're looking to torch fat fast, give one of these classes a go.

Metabolic at Metabolic London, Camden 

In a gym class we burn up to 1,000 calories in a 50-minute.

Founder Lawrence Hannah has derived a winning formula for ultimate fat-burning using HIIT and strength exercises in his signature Metabolic functional training class.

There's a circuit arrive on the board, and it's 30 of everything, including box jumps, then specific distances on the rower and calorie-burn on the assault bike, meaning you go at your own pace.

Climb to the Beat on the Versa Climber at Sweat by BXR, Paddington

Burn between 400 and 800 calories in a 45-minute gym class.

If burpees aren't your thing but you still want to get your heart racing you may want to consider a stint on the Versa Climber at Sweat by BXR's cardio studio. The slightly bizarre looking machine copy the motion of climbing, and will work your posterior chain like no other, firing up your glutes, shredding your back muscles and improving your posture all at once. 

Just like spinning, it's a low-impact workout – in fact spin addicts are bound to love this – but you'll burn more calories. Playlists are meticulously chosen to provide the perfect beat to climb to, think banging techno and a touch of basement. 

HEAT at Virgin Active, Kensington

Burn between 650 and 800 calories per 60-minute gym class.

HEAT (high-energy athletic training) moves between functional floor training with various pieces of equipment and the skill mill, a curved treadmill on which you determine your own speed (and for the record, feels way harder than a regular motorized treadmill).

Beats at The Engine Room, Marylebone

Burn up to 1,000 calories in a 50-minute gym class.

Boutique rowing is own a moment in the capital. Rowing uses 85 per cent of the body's muscles across nine major muscle groups, working your heart, lungs, upper and lower body, toning your arms, strengthening your back. 

Beats consists of three parts: stamina, strength and a race, and you'll alternate time on the rower with floor work to loud thudding music. The class begins with a 9-minute row, which might not sound like that much, but if you're new to the sport, it is. Expect continuous pain and an insatiable hunger the next day.

Sweat X at Third Space, The City 

Burn up to 1,000 calories in a gym class.

Like Barry's, half the class consists on using treadmill for cardio workout, the other half is conditioning work involving battle ropes, dumbbells and pull up bars, to help you torch fat fast.