Walk & bodyweight starter (4 weeks)

Create a 4-week at-home starter plan for fat loss and energy that combines walking with bodyweight circuits. I'm a beginner woman in my 30s, no gym and no equipment. Lay it out week by week with specific sessions. For walking, prescribe brisk walks by duration and effort: most walks should be an easy-to-moderate, conversational pace (I can still talk in full sentences), building from about 20 minutes to 35-40 minutes, and include a daily step target that rises gradually over the 4 weeks. For the bodyweight circuits, give me 3 sessions a week of about 20-25 minutes each: start every session with a 3-4 minute warm-up (marching, arm circles, bodyweight squats), then a circuit of squats, incline push-ups (hands on a counter), glute bridges, reverse lunges, and a 20-30 second plank. Prescribe reps, number of rounds, and rest in seconds for each week, progressing the volume slightly week over week while keeping effort manageable (stop 2-3 reps short of failure). Add one full rest or gentle-mobility day per week. Show the weekly schedule as a simple table, tell me how to progress to week 5, and be clear that fat loss depends mostly on diet alongside this.