Your eye doctor may have already suggested that you have surgery or stronger eye glasses to combat this condition. There is a third option you may want to consider. Eye exercises can help to strengthen your vision and correct the problems caused by astigmatism.Astigmatism is caused by the front surface of your cornea not curving the way it should: usually one side will be more flat than the other.our eye doctor may have already suggested that you have surgery or stronger eye glasses to combat this condition. There is a third option you may want to consider. Eye exercises can help to strengthen your vision and correct the problems caused by astigmatism.
Preload is how much youâre compressing the spring from itâs normal length with nothing on it. You want to set preload to get the correct amount of race sag. Race sag is the difference in bike height from a bike on a stand with a fully dropped suspension and a bike with the rider on it.You want to aim for 3-4â of race sag on this bike. This gets your suspension near the center of its amount of travel (stroke).ace sag is the difference in bike height from a bike on a stand with a fully dropped suspension and a bike with the rider on it. You want to aim for 3-4â of race sag on this bike.
Know that you must adjust the seat and handlebars to truly size a bike. Getting the right frame size is only one part of sizing a bike correctly. Think of sizing measurements as your first draft -- it is the basis for everything that follows, but you need to make finer adjustments to get everything right.2.ou need to measure the distance from the bottom of your foot to where your seat should be. If you are sizing a mountain bike, measure in inches. If you are sizing a road bike, measure in centimeters. For the most precise measurement: 1  Take a thick, hardcover book and sit on the spine as if it was your bike seat.