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Muscle tension in the face
Energy levels and posture
In high-pressure careers, stress levels naturally fluctuate.
Justin Bieber has gone through multiple fashion phases over the years:
Early pop star image (bright, youthful styling)
Streetwear-heavy street fashion era
More minimalist, relaxed looks in recent years
Changes in:
For example:
A clean-shaven face can make someone look younger
A beard can add maturity and change facial proportions
Loose clothing can change perceived body shape
These are visual effects rather than biological changes.
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