How Can I Determine The Maximum Bulb Wattage

perfect (for men's health magazine)

See also
http://dihargentina.blogspot.com/2011/02/sistema-muscular.html

you make a dorsal apparatus can not be simpler. "Just a bar attached to the wall or a machine-dominated," says Luca Cicolella, Mr. Universe 2010. Well, someone who will explain how to implement them. This movement involves many different muscle groups: arms, shoulders and chest.
"But be careful if you are a beginner. If you do not have the strength to perform push-ups 5-6 as explained below, yet are not prepared. Practice in the dorsal milestones machine, increasing the weight and used the assisted machine dominated, increasingly less weight. Before you get your hands to work too warm muscles and joints. "HANDS

Extend your arms and grab the bar with a normal grip, 7-10 cm apart hands over the shoulders.

The MH Board

Put the thumb as you be most comfortable: on the inside or outside.

BACK should be slightly arched
; strive to keep it in that state throughout the year.

The MH Board

oscillations or Nothing stress on the spine.

ARMS
Upload the body flexing, throwing elbows back and down, touching the bar to the chest. The board of MH

Try to keep the elbows as far back as possible. LUMBAR

Keep your lower back in line with the ridge to prevent joint and muscle problems.

MH's advice

not carry the area to give you momentum. SHOULDER

Evita "curves" to the ribs. And when "uploading" it near the bar all you can.

MH's advice

Keep them low, you can get more momentum. LEGS

Keep them parallel, tense, motionless, like marble. Should not oscillate.

MH's advice No

use them to give impulse or loss is not effective. FEET

Keep them fixed, immobile, to avoid imbalances.

MH's advice

To achieve better symmetry, crossings, and if you do change the crosses mid-series.

source:
http://www.menshealth.es/mh/general/contenido/noticia/dominadas-perfectas/2c9181aa2ddcd1a9012e5d05977f4ceb.html