Burn Machine Adaptive weight range: The device offers adjustable resistance from 8 to 18 lbs to match different training phases, enabling you to progress and tailor workouts as you advance. Elevates aerobic performance: By enhancing explosive muscle strength and endurance, it helps you push your cardio activities to higher levels. Suitable for athletes and fitness enthusiasts looking to improve aerobic outcomes. Precise control with Smart Rotating Button: Effortless and accurate adjustments are built in. Seamlessly switch between training modes to maximize workout efficiency and consistency. Comfortable and durable design: Constructed with durable material and a comfortable grip, designed for intensity workouts and long training sessions without sacrificing form or comfort. Key attributes at a glance: Adjustable resistance from 8 to 18 lbs; durable construction; ergonomic grip; easy mode switching for efficient training. Practical use scenarios: 1) intensity interval training at the gym or home, using weight adjustments to challenge power and recovery periods. 2) Explosive strength and endurance circuits for runners, cyclists, or teamsport athletes seeking cardio and power gains. 3) General conditioning during cardiofocused workouts, enabling progressive resistance within a single device.