He also sustained other injuries, including having glass removed from his foot and contracting a serious virus after completing Elvis.
Butler revealed that fellow actors Tom Hardy and Laura Dern have provided guidance on balancing his method acting with personal well-being.
Laura Dern specifically taught him how to immerse himself in roles without negatively impacting his personal life, suggesting the process can be therapeutic.
Inspired by Tom Hardy, Butler adopted a rigorous post-filming routine involving exercise, sauna, and cold showers to improve his sleep and overall health.