Secrets Of Sewing Machine Repair
Body position is probably the single most important element to good technique. A relaxed, comfortable stance is essential. (Figure 6-1 shows a correct climbing stance, and Figure 6-2, page 6-4, shows an incorrect stance.) The body should be in a near vertical or erect stance with the weight centered over the feet. Leaning in towards the rock will cause the feet to push outward, away from the rock, resulting in a loss of friction between the boot sole and rock surface. The legs are straight and the heels are kept low to reduce fatigue. Bent legs and tense muscles tire quickly. If strained for too long, tense muscles may vibrate uncontrollably. This vibration, known as Elvis-ing or sewing-machine leg can be cured by straightening the leg, lowering the heel, or moving on to a more restful position. The hands are used to maintain balance. Keeping the hands between waist and shoulder level will reduce arm fatigue.
Fatigue, often aggravated by anxiety, can lead to troublesome vibrations in the muscles of the leg, known as sewing-machine leg. The best way to stop it is to try to relax your mind and to change leg position, either by moving on, lowering the heel, or straightening the leg.
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