Then at a count of "One" the arms are slowly raised, as a deep inhalation is taken, to an angle of forty-five degrees from horizontal; at the same time the heels are raised till the weight of the body rests on the balls of the feet.

(See Fig.

5.) [Illustration: FIG.

5 .-- GRATE The caution in the "Grate" position is not to let the arms drop, even a fraction of an inch, below the horizontal, and not to let them go up above the angle of forty-five degrees, for in either of these cases there is a distinct rest given to the shoulder muscles.

Most of the ordinary exercises of this kind carry the arms above the head; this always releases the effort of the shoulder muscle and is therefore nearly valueless as an exercise for these members.
Another fault in this exercise is letting the head come forward.