This is the 9191st most frequent Spanish word.
abonándose
"Abonándose" means "subscribing" or "signing up."
Here, 'abonándose' refers to signing up for a subscription or membership to a gym.
Ella está abonándose a un gimnasio.
She is subscribing to a gym.
In this context, 'abonándose' indicates the act of committing to receive a repeated service by agreement.
Ellos están abonándose para recibir un servicio de televisión por cable.
They are subscribing to receive cable television service.
Here, 'abonándose' signifies the action of enlisting or registering to receive regular issues of a magazine.