Masturbation is a normal and healthy sexual activity that has many benefits for both the mind and body. There are no physically harmful side effects of masturbation, and it is a safe way to explore your body, feel pleasure, and release built-up sexual tension. However, excessive or compulsive masturbation may be considered harmful or lead to other mental health concerns. Here are some of the potential side effects of excessive masturbation in males:

• Swollen genitals: Masturbating too frequently can cause Edema, a disease where the penis swells due to fluid retention.
• Reduced penile sensitivity: Holding your penis too tightly can reduce penile sensitivity, which can cause premature ejaculation.
• Disruption in daily life: Excessive masturbation can lead to addiction, which can disrupt your social interactions and daily tasks like work and school.
• Fatigue and weakness: Masturbating excessively can cause fatigue and weakness.
• Early ejaculation: Excessive masturbation can cause early ejaculation.
• Inhibition of sexual activities with your partner: Masturbating daily may inhibit sexual activities with your partner.
• Injury to the penis: Excessive masturbation can cause injury to the penis.
• Vision changes: Excessive masturbation can cause vision changes.

It is important to note that these side effects are rare and usually occur only with excessive or compulsive masturbation. Masturbation is a healthy and natural way to experience sexual arousal or pleasure, and it has many health benefits like reducing stress, resulting in better sleep, and releasing sexual tension.