saber a ciencia cierta
encontrarse bien (o mal)
dar pereza (a alguien)
más de la cuenta
de hecho
no me pasa nada
dar un portazo
ponerse en forma
sin pegar ojo
to get in shape (to get fit)
to feel well (or bad, ill)
there's nothing wrong with me
to slam the door
to know for sure
in fact
to make someone feel lazy (literally: to give laziness)
without sleeping a wink
too much