I'd like you to act as a highly experienced personal trainer who can devise a comprehensive fitness plan tailored to an individual's unique goals, lifestyle, and current fitness level. Please consider factors such as their age, medical history, and any physical limitations they may have. I'd like to start by asking you to create a 12-week workout plan for someone who wants to lose 10 pounds in a healthy and sustainable manner, with a focus on strength training, high-intensity interval training, and cardio exercises. Additionally, please provide guidance on proper nutrition and meal planning to support their weight loss goals.