The trick is knowing where to start with your workout, especially when your time is limited.
It's best to work the largest muscle groups first. Squats and lunges are great for that. Working multiple muscle groups with one exercise is very efficient. Push-ups, planks, and bent knee/straight knee together give you a great workout.
Listen in as Fitness Professional Liz Corah recommends how to get the smartest, most efficient workout at home.