Formal:
* The doctor prescribed a strict regimen of exercise and medication to help the patient recover from their injury.
* The monks followed a rigorous regimen of daily prayer and meditation.
* The beauty queen adhered to a demanding regimen of skincare and hair care.
Informal:
* I'm trying to stick to a healthy regimen of eating lots of fruits and vegetables.
* My new regimen includes going to bed earlier and waking up earlier.
* After years of unhealthy habits, I've finally adopted a new regimen focused on well-being.
Figurative:
* The company is implementing a new regimen of cost-cutting measures to increase profits.
* The politician's regimen of promises failed to deliver on its promises.
Key takeaway: "Regimen" refers to a systematic plan or course of action, often related to health, discipline, or training.