Blankets were traditionally made of wool, while sheets were made of cotton which is less irritating to the skin. These days, artificial fibers are frequently used for both. Duvets vs Comforters: http://www.ajmoss.com/blog/2006/06/01/co... How to fit a Duvet Cover: http://www.bbc.co.uk/dna/h2g2/brunel/A68...
An easy swim burns around 500 calories an hour, while a vigorous effort can reach up to 700 calories an hour. Swimming exercise provided workout for lower body, upper body, core, and back will all be worked and strengthen during a good swimming workout, you can go for 4 to 6 days swimming workout.
Often people fall back into thinking that cardio is code for running. While running is a very efficient way to burn calories, there are others. Swimming, rowing, boxing, and dancing are all great workouts, too. A good, solid rowing workout can easily have you burning 800 to 1,000 calories in an hour's worth of work. Just 45 minutes in the pool will easily burn 800 excess calories just itching to be stored as fat. Boxing rings in at about 700 calories per hour, depending on your weight.