Learn Spanish (Spain): Me gusta descansar el domingo.

In Spanish, the verb gustar works backwards compared to English. Instead of saying 'I like resting', you are literally saying 'Resting is pleasing to me'. The me is an indirect object pronoun that means 'to me'. You cannot use yo here because you are not the one doing the action.

Why is the verb gusta instead of gusto?

Because you are not the subject of the sentence! The thing you like is the action of resting (descansar). When you like doing an action (a verb in its basic, unchanged form), you always use the singular form gusta, no matter who is doing the liking.

Why is there an el before domingo if the English translation says 'on Sunday'?

In Spanish, you never use words like 'on' or 'in' for days of the week. Instead, you just use the masculine article el (the). To say 'on Sunday', you literally say 'the Sunday' (el domingo).

Could I say los domingos instead of el domingo here?

Yes! Saying los domingos translates to 'on Sundays'. In this context, both el domingo and los domingos sound completely natural and mean the same thing: that you generally have a habit of resting on that day of the week.