African American man with dark skin wearing light pink shirt biting nails and showing anxiety or nervousness isolated on white background. Closeup, stress and worry expression on face.

African American dark skin man anxiety nervousness biting nails stress worry emotion facial expression casual shirt isolated white background closeup portrait male person human emotion feeling nervous anxious thoughtful concern upset tense worry biting hand fingers skin face people adult male adult one person indoors studio expression emotion isolated background casual wear human face person portrait