The standard method for strength training is lifting heavy objects, which is quite literally stone age technology, and is not well suited to the capacities of human biomechanics. A person’s ability to produce muscular force varies dramatically as one moves through any given range of motion, so a modern fitness solution should match that variance by varying the resistance applied. In fact, research has shown that when people exercise with a variable resistance system they improve in strength three times as quickly as those just using weights. We wanted to create a product that would allow people to leverage these research findings to get better, safer, and faster exercise.