frequency (rate of occurrence)

masturbation (manual erotic stimulation of the genitals)

exert, cause

think / meditate / consider / expect / reflect / prepare / make up one's mind / imagine / contrive

influence, effect

to influence, to have an effect upon

healthy, fit

health

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend