How does Hercules get his strength back?

Hercules regains his strength through a series of trials and challenges that test his resolve and character. In some versions of his myth, he is aided by the goddess Hera, who ultimately helps him reclaim his power after he overcomes a period of madness. Additionally, completing his Twelve Labors not only restores his strength but also redeems him and solidifies his status as a hero among the gods and mortals.