1. People with weak physique: This kind of human body is too weak, and tattoos will make the body unbearable and difficult to recover in a short time.

2. People with poor liver function: People with poor liver function are not suitable for tattooing, because some pigments may be used in the process of tattooing, and these pigments will contain some harmful substances. If the liver function is poor, it will easily lead to the accumulation of these harmful substances in the body, thus affecting people's health.

3. People with scar constitution: People with scar constitution are not suitable for tattoos, because tattoos cannot be successful at one time, so it is easy to leave scars on their bodies, while people with scar constitution can easily make scars proliferate, thus affecting the beauty of the skin.

4. Hypertensive people: Hypertensive people are not suitable for tattoos, because they may be nervous when tattooing, and their blood pressure will suddenly rise, which may easily lead to hypertensive attacks and may even cause syncope.

5. People with allergies: People with allergies have allergic reactions to the chemical components in pigments, which will not only affect the beauty of the skin, but also affect the health of the body.

The above are the taboos and stresses of male tattoos. If you have any questions or are not sure whether it is suitable for tattooing, I suggest you consult a doctor or a professional to ensure your health and safety.