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You have two types of skeletal muscle fiber:
1. The small marathon type I fibre
2. The big sprinting type II fiber.

IronChart wants you to tap into the powerful type II, fast twitch fiber by measuring, tracking and giving you feedback of power while doing resistance training with weights or body weight exercises.

IronChart is super simple to use: It will start tracking as soon as it is started. The power drop threshold can first be adjusted between 5% and 40%. Lower numbers (5-20%) are best to improve power or as a primer before other exercises, and higher numbers (30-40%) are better for full hypertrophy training without any additional exercises. Tracking can be reset with the click of a button when switching exercises or doing new sets. It is important to use as high speed as possible when doing the exercise to maximize the power used. The ding-dong sound will tell whether you have sufficient power in your reps or if you should rest.

When you have used up your capacity and the power drops below the set threshold (e.g. 10%), the ding-dong sound stops and you should rest for 2-5 minutes before repeating a few sets (e.g. 3 in total). This will give the fast twitch muscle fibres maximum stimulus to grow.

IronChart power training is different to regular resistance training, where you only tap into the bigger fast twitch muscle fiber when going close to failure. IronChart could thus be used as a primer to regular resistance training by starting with IronChart before all other activity.

Requirements: The phone needs to be attached to the weight moving, if using machines or lifting weights. The phone needs to be in contact with the body if doing body weight/calisthenic types of exercise. A simple cell phone armband can be used in both cases to attach the phone. The screen should not be switched off during exercise to avoid setting the IronChart to sleep. Earbuds can be used to avoid losing your gym membership.

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