In English there are no masculine or feminine forms. English uses gender specific nouns for male or female, such as male and female.
The noun 'exercise' is a neuter noun, a word for a thing that has no gender.
its masculine
Feminin.
feminin
chica is feminine
le pain
feminine
feminin
feminin
it is feminin
masculin
The French word "lit" is masculine.
The word "chateau" is masculine in French.