No it is not. health workers have a deadline that they have to meet to get the vaccine or else they will be fired. some have the choice to get tested everyday otherwise.
The glial cells forming myelin sheaths are called oligodendrocytes in the central nervous system and Schwann cells in the peripheral nervous system. The gaps (approximately 1 micrometer wide) formed between myelin sheath cells long the axons are called Nodes of Ranvier.
hope this helps :p
Physical because your body is physically recovering