Self-powered fitness equipment is becoming increasingly popular because it’s a ‘green’ alternative that saves energy and money. Instead of plugging in the machine and using electricity to power it, the energy that’s produced while exercising on a self-powered machine is stored in an internal battery. This self-generated energy is then used to power both the motor and the electronic display. There are a growing number of self-powered fitness machines currently on the market, here are three of the best.

Jacob’s Ladder™ is a challenging ladder-like piece of equipment that delivers a killer cardio workout without the typical lower-back strain you would usually associate with a climbing frame or stairs. Jacob’s Ladder is set at a 40-degree angle that puts the back in a more neutral position and helps to engage the core muscles. It’s been used in a number of different ways: for athletic training, normal 15 to 20-minute aerobic workouts, for rehab, and to train the military. The first thing new users generally notice is the intensity of the workout, as their heart rate goes up. But they feel the intensity where they should – in their muscles, and not in their knee, hip, and ankle joints. And because it is self-powered, you’ll find it easy to the speed at which you climb, and whether you want to work your arms and legs together or separately.

The Octane Q47 elliptical cross trainer is a technologically superior, award-winning piece of equipment that boasts ergonomically advanced engineering features. Self-powered, it is a club-quality machine that combines form and function and delivers exceptional results in a home gym environment. A key feature of the Q47 is its unique stride-based programming – SmartStride – that automatically adjusts the stride length of the machine to match your body’s perfect stride. The machine also features the octane Body-mapping ergonomics and QuadLink drive that create natural movement and doesn’t stress the joints; and the brand’s HeartLogic intelligence that will enable you to burn calories and boost your overall fitness levels.

The Cybex 625R recumbent bike has an E3 view-embedded monitor that has the ability to add entertainment to any exercise experience. It also integrates an easy-to-use Cardio Touch command center that makes it a lot easier for users to focus on their workout, instead of struggling with on-screen controls. Whether you are an amateur cyclist, a rehab patient, or are training for high-level competition, you’ll find the choice of 500 program varieties has lots to offer. Self-powered, this exercise bike has an immense resistance range, from an ultra-low 20 watts to 900 watts, designed to deliver a hugely challenging workout. The seat of the bike has been engineered for ultimate comfort for the long haul, and provides support where needed.