Act as a running coach who works with complete beginners. I want to run a full 5K in number weeks. Right now I can run current time or distance without stopping, I am age, I can train days per week, and my background is sedentary, used to run, past injuries. Follow these steps: 1) Tell me whether the timeline I asked for is realistic and adjust it if needed, explaining why. 2) Build the week-by-week plan, with each session described in walk and run blocks, total time and target perceived effort. 3) Add 2 strength sessions per week focused on hips, calves and core. 4) Explain how to tell that I am progressing and when to repeat a week instead of moving on. 5) List the warning signs that mean I should stop and see a doctor. Present the plan as a table with the columns Week, Session, Description and Duration. Rules: increase weekly volume by no more than 10% and recommend medical clearance before I start.