The reason the three way classification of Igneous, Sedimentary and Metamorphic is used is because the processes involved in forming the three rock types usually results in a characteristic relationship between the mineral grains that is diagnostic. Sedimentary rocks form from sediments deposited from water or air.he reason the three way classification of Igneous, Sedimentary and Metamorphic is used is because the processes involved in forming the three rock types usually results in a characteristic relationship between the mineral grains that is diagnostic. Sedimentary rocks form from sediments deposited from water or air.
1 To prevent blisters caused by rubbing (friction blisters): 2  Avoid wearing shoes that are too tight or that rub your feet.3  Roomy footwear has a wide toe box with more room for your toes and the ball of your foot. 4  You should be able to wiggle your toes in your shoes.ome of the most common types of blisters can be prevented. 1  To prevent blisters caused by rubbing (friction blisters): 2  Avoid wearing shoes that are too tight or that rub your feet.
Shoes that squeeze your foot, ones that are too loose, or ones that cause you to walk abnormally subject your foot to pressure and friction that may result in blisters. Try to avoid wearing these types of shoes, which include: 1  High heeled shoes, especially those with narrow toe boxes.o prevent blisters in these situations, make sure to: 1  Choose athletic shoes that fit your feet very comfortably. 2  Make sure you properly break your athletic shoes in by wearing them for only for short sessions until they conform to the shape of your feet.