Complex sentence: He had to regain his muscular physique for the role, and took 6 months through a very delicate and dedicated diet routine, focusing on having high-protein drinks and vitamin and mineral supplements, he managed to hit 165 pounds for the role.
Split into simpler sentences: He had to regain his muscular physique for the role and took 6 months through a very delicate and dedicated diet routine. Focusing on high-protein drinks and vitamin and mineral supplements, he managed to hit 165 pounds for the role.