Kettlebell

Buy a kettlebell at NRG Fitness: strength and cardio in one compact weight

Training for HYROX, looking to burn calories quickly at home or simply building strong muscles? A kettlebell gives you a versatile training partner. In our kettlebell category, you'll find everything from classic cast iron to adjustable kettlebells and official competition kettlebells. Order today and discover why more and more athletes are choosing this compact alternative to traditional dumbbells.

Research-backed results in a short time

• A 4-week programme of 15 seconds' work / 15 seconds' rest produced 6% better aerobic fitness in elite female players ( Falatic et al., 2015).
• Just 2 × 12 minutes of swings per week delivered almost 10% more leg strength and 20% greater jump power in 6 weeks ( Lake & Lauder, 2012).

How heavy should your kettlebell be?

Women 6–8 kg (e.g. Toorx Vinyl 7 kg) – ideal for 10–15 crisp swings.
Men 10–12 kg (e.g. Centr x Hyrox Octo 12 kg) – enough for strength and power.

Experienced users keep a light bell for technique (Turkish get-up) and add a heavier one for explosive swings and goblet squats.

Is a kettlebell good for weight loss?

Absolutely. Ballistic movements such as swings and snatches combine strength and cardio, push your heart rate up to 70–90% of HR_max and create a prolonged EPOC (afterburn) effect. Add 2–3 sessions a week to your routine for a solid boost in fat burning, supported by the studies above.

Kettlebell types in our range compared

Kettlebell vs dumbbell

Dumbbells excel at controlled, linear strength progression; kettlebells win on explosiveness, core stability and grip strength thanks to their offset centre of mass:

• Explosive power – kettlebell swings generate similar or even higher peak ground reaction forces than jump squats: see the study by Lake & Lauder (J Strength Cond Res, 2012).
• Cardio boost – a 15 s on / 15 s off snatch protocol increased VO₂max by 6% in four weeks (Falatic et al., 2015).
• Core activation – the unilateral load forces your trunk muscles to work harder to control rotation, which you achieve less with straight dumbbell lifts.

Choose dumbbells for isolation exercises and kettlebells for functional power – or combine both.

Training frequency & periodisation

• Beginners – 3 × 20–30 minutes per week; Falatic's 15:15 snatch study (2015) shows this schedule significantly improves VO₂max.
• HYROX athletes – 10–15 minutes of swings/snatches daily (15 s work / 15 s rest, approx. 40 swings per minute) as a finisher.
• Deload – halve the volume every 5th week to let tendons and grip recover.

Building muscle with kettlebells

Lake & Lauder showed that 24 minutes of swings per week for 6 weeks led to +9.8% 1RM and +19.8% vertical jump (2012).

• Strength/hypertrophy: 4–6 sets × 5–8 reps of heavy goblet squats and clean & press (≈ 80% 1RM).
• Endurance: 10-minute EMOM × 10–12 swings @ 12–16 kg.

How many kettlebells do you need?

1. Start – one bell for unilateral exercises.
2. Upgrade – two identical bells for double cleans/jerks.
3. Complete setup – light / medium / heavy to alternate technique, strength and HIIT work.