The rolling-out of 5G antennas over the territory is a fundamental step to provide 5G connectivity. However, little efforts have been done so far on the exposure assessment from 5G cellular towers over young people and sensitive buildings like schools and medical centers. The goal of this article is therefore to explain why the 5G service strongly leverages the deployment of 5G antennas over cellular towers, how a tower installation hosting 5G antennas affects exposure over the territory, and at what extent children/teenagers, schools and medical centers are impacted by the exposure from 5G towers.