I only started using the Malibu Pilates Chair consistently in June of this year. It stood untouched for about 6 years, so both springs were like new. A spring broke in August, the reason is that I have an amputated leg, so obviously I use one side more than the other. I went ahead and bought 2 replacements at a time, assuming the less used side would eventually break. The new one broke today. At least I still have a new one, but based on this experience I will be buying another one in about 5 months. βΉοΈ