1. Many actors undergo extreme body transformations for movie roles, gaining or losing significant amounts of weight in a short period of time which can have health risks.
2. Rapid weight changes, whether gain or loss, can cause issues like headaches, fatigue, dizziness, and hormonal imbalances.
3. Transforming one's body often requires dedicated exercise regimens and specialized diets over long periods, and may impact both physical and mental health. Whether these measures are "worth it" is debated.