A calorie is a measure of energy, just as a pound is a measure of weight and a mile is a measure of distance. So the amount of energy you exert in doing an activity is measured by the calories burn rate.
A water pressure regulator is a plumbing valve that reduces the water pressure coming from the main water line into the house.o determine if you need a water pressure regulator test the water pressure of the main water supply to your house. You can buy a pressure gauge for a local hardware or home improvement store.
Most homes do not have pressure regulator installed, but if you have one and it is not adjusted properly, you could have either too much, or too little pressure in your faucet or shower. With the right tools, you will be able to adjust the water pressure regulator by yourself instead of calling in the plumber.