1 Without any sort of professional installation, the cost of an electric furnace is going to cost anywhere from as little as $500 to as much as $1,500.2  When installation is factored in, be sure to add another $800 to $1,500 for the average job. Without any sort of professional installation, the cost of an electric furnace is going to cost anywhere from as little as $500 to as much as $1,500.
Designed to allow the wearer to enjoy the beach while remaining protected, swim shirts can provide a great deal of protection. Some brands have SPF ratings of up to 150, and someone who is wearing one is less likely to be burned by the sun in those areas that it covers.
Swimming works a wider range of muscle groups than walking or jogging and burns a lot of calories. Even a slow freestyle burns as much as a 5 mph jog. The best way to improve cardiovascular endurance while swimming is to swim 50-, 100- or 200-yard intervals followed by short rest periods. As your endurance improves, increase the length of the intervals or shorten the rest periods.