Break down the best workout routine for a woman in her mid 30s who has the goal of building lean muscle while overall staying healthy. What should she be doing per day for how long?

For a woman in her mid-30s aiming to build lean muscle and support overall health, a practical target is three to four 45–60-minute strength workouts per week, plus one or two properly hard interval sessions and some easy movement or cardio. Adjust the days and workload to recovery and schedule. 1 2

• Strength train 3–4 times weekly: Prioritize compound movements such as squats, deadlifts, chin-ups, rows, overhead presses, and bench presses. Whole-body sessions or a split can both work; choose a format that fits your time and lets you move well. 1 3
• Use varied rep ranges and planned progression: Include heavier work around 5–10 reps and higher-rep work around 11–30 reps. Build training demands over six-week blocks rather than repeating the same workload indefinitely. 4 5 6
• Do HIIT 1–2 times weekly, not every day: Use genuinely hard intervals—for example, efforts lasting about 1–4 minutes at high intensity, or all-out sprints of 30 seconds or less—with enough recovery to repeat the effort well. 7 8
• Include easy Zone 2-style cardio, but don’t rely on moderate-intensity classes: Easy conversational-pace activity can be enjoyable and restorative. The guest emphasizes polarized training—strength and true high-intensity work, with easy activity rather than repeatedly pushing into moderate intensity. 9 10
• Keep recovery days lightly active or restful: Walking, time outdoors, or other gentle movement are options; the key is not making every day hard. One sample week is strength Monday, HIIT Tuesday, light activity Wednesday, strength Thursday, easy cardio Friday, strength Saturday, and rest Sunday. This is an illustrative schedule, not a requirement. 11 12
• Support training with sufficient protein and balanced food: The discussion gives a target of about 1.1–1.2 grams of quality protein per pound of body weight and also notes the importance of carbohydrates for replenishing glycogen and foods such as fruit, vegetables, and fiber. 13