Twisting while lifting heavy objects
is risky to your back

Good posture not only looks good, it feels good.
Did you ever notice someone who had a well-developed body yet all that stood out was their rounded shoulders, their sway back and drooping chin? Proper posture says a lot about you.

Rhomboids
These muscles are located in between your shoulder blades. Squeeze your shoulder blades together, those muscles help keep you upright and your shoulders back.

Low Back Muscles
Also known as erector spinae muscles, this group of small and large muscles help keep you erect and when strengthen and stretch they will help minimize low back injuries.

Front Shoulders 
Your shoulders are divided into three groups: rear, lateral and frontal. When the front shoulder muscles are tight they will pull and round off the shoulders creating a slumping effect.

Abdominals 
Strong stomach muscles not only look good, they help support your back. Be careful not to over work your stomach muscles and forget about your back muscles. Strong abdominals is not an excuse for having weak back muscles.

Hip Flexors
Your hip flexors are composed of two muscles, psoas major and the muscle. These muscle are used to help lift your legs, however because they originate in the lower back then cross over your pelvis and attach to your upper leg, if they become inflexible they can cause a sway back effect in your lower back.

Any workout program you design should incorporate stretches and exercises that directly use the above muscle groups to help create a body is healthy and looks good.