• Foot injuries or damage.
• While taking potent medications.
• Severe blood disorders or advanced diabetes.
• Epilepsy or serious mental health conditions.
• Cardiovascular diseases (if light jogging is permissible, nail standing may also be practiced).
• During the first two days of the menstrual cycle.
• During pregnancy.
Note: Always consult with a healthcare professional before starting any new physical practice, especially if you have existing health conditions.