YOU SAID:
my muscles are getting bigger
INTO JAPANESE
筋肉が大きくなってきた
BACK INTO ENGLISH
Muscles are getting bigger
INTO JAPANESE
筋肉が大きくなっている
BACK INTO ENGLISH
My muscles are getting bigger.
INTO JAPANESE
筋肉が大きくなってきました。
BACK INTO ENGLISH
My muscles are getting bigger.
You've done this before, haven't you.