When it comes to egg freezing, the most important thing to avoid is any kind of exposure to toxic substances. This includes contact with solvents or chemicals like formaldehyde, benzene and xylene, as these can disrupt normal fertilization and cell division.
Additionally, smoking should be avoided during the process- not only due to the risk of damaging nicotine eggs but also because smoking can heighten hormone levels in your body that may impede the process. Finally, while there’s no known harm from radiation such as x-rays during egg freezing, it’s recommended that you avoid unnecessary radiation just in case it affects your fertility.