Monks gain the Empty Body feature (PHB, page 79):
Beginning at 18th level, you can use your action to spend 4 ki points to become invisible for 1 minute. During that time, you also have resistance to all damage but force damage.
"During that time" is a bit ambiguous to me. It implies that it's connected to the duration of one minute, but not necessarily to being invisible yet it isn't clear. However, this description doesn't mention any saves or concentration required for staying invisible, after taking damage for example. But since monks are all about controlling their own body and mind, it would make sense to me to become visible at will.
Is it possible to break the invisibility while keeping the resistances?
If so, how?
Being invisible for a minute can be handy, but as the sole frontliner of our party (bard, mystic, sorcerer) it's not always preferable in combat. Often I actually want the enemies to see me, but I wouldn't mind the resistances.
For this question I'm only interested in the RAW.