Blind contour drawing is a method of training popularized by Kimon Nicolaides his book 'The Natural Way to Draw'. Many have claimed that it improves hand-eye coordination

The method consists in slowly following the contours of a model with the eyes, simultaneously moving the pencil so as to draw the contours in one continuous line without looking at the paper.

Blind contour drawing may be performed as a warm-up prior to drawing from a model, thereby increasing the accuracy with which contours tend to be drawn. Subjects such as crumpled pieces of paper provide an endless variety of contours to practice on.

Kimon Nicolaides' book 'The Natural Way to Draw' is a course that guides students in exploring the expressiveness of human forms. Unfortunately, like most books on the market today, it never explains the proper way to measure proportions and how to 'block in'. Refer to Harold Speed's 'The Practice & Science of Drawing' for clear info (see also: http://www.iampeth.com/books/palmer_budget/palmers_budget_page128.html).

By the way:

http://www.iampeth.com/books.htm has numerous exercises that improve hand-eye coordination.

e.g. http://www.iampeth.com/books/palmer_budget/palmers_budget_page28.html.

Further exercises (practice drill 1. before drill 2.):

References

Drawing