By Chris Sherwood
Posture is an important part of preventing problems ranging from back pain to fatigue. When the back is straight, the spine is supported and stabilized, but as you slouch or practice other methods of poor posture, your spine no longer has the support it needs to stay balanced, leading to many health problems.
The most common effect of poor posture are sore muscles. As you slouch, the muscles have to work harder to keep the spine stabilized and protected. The extra work on these muscles can cause muscle tightness and fatigue. This can lead to chronic issues with tight and sore muscles from the neck all the way down to the lower back. Two major muscle groups that bare the brunt of these issues are the flexors and extensors of the trunk, which allow you to bend forward and lift objects.
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