At room temperature, almost all hydrogen atoms are in a state with an energy of -13.6 eV. This energy corresponds to the energy of the ground state of the hydrogen atom. At higher temperatures or as a result of an electrical discharge, many collisions between atoms occur. As a result, atoms from stationary states with lower energy go to stationary states with higher energy. Such states are called excited.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.