✅ Sauna & cold plunge basics
✅ Common beginner problems and practical solutions
✅ Safety guidelines and warning signs
✅ Beginner-friendly routines
✅ Hydration and recovery tips
✅ Sauna and exercise guidance
✅ Cold plunge and exercise guidance
✅ A simple 7-day beginner plan
✅ Checklists and reflection worksheets
✅ Realistic expectations and evidence-based guidance