Why do your arms hurt after jabs?

Your arms may hurt after jabs due to muscle strain and tension from the repetitive motion of throwing punches, especially if you're not accustomed to that level of activity. The impact on your muscles, ligaments, and tendons can lead to soreness as they adapt to the workout. Additionally, improper technique or overexertion can exacerbate discomfort. Recovery and proper warm-ups can help mitigate this pain over time.