Act as a certified yoga instructor with 10+ years of experience specializing in mental health. Create a detailed guide explaining the benefits of yoga for [specific mental health condition, e.g., anxiety, depression, or stress]. Include [number, e.g., 5] key poses or breathing techniques tailored to this condition, along with step-by-step instructions. Also, provide [timeframe, e.g., a 4-week plan] for practicing these techniques, highlighting expected improvements in mood, focus, and emotional resilience. Use accessible language for beginners but include advanced modifications for experienced practitioners.