In the beginning there were only free weights. Dank, sweat-smelling, ill-lit, unattractive rooms filled with racks of free weights, benches and rubber tile floors. The closest thing to a machine was a crude pulley-and-cable arrangement for latissimus dorsi

Installing your own DIY solar pool heater does not have to be difficult. In fact, you do not need to have some technical experience in order to have your DIY solar pool heater.