Ask the Personal Trainer Joni Hyde is a Certified Personal Trainer and owner of WorkoutsForWomen.com Strengthing of the Legs Q. I want to strengthen my quadriceps so that I can build up my week knees (they are currently sore from overexertion). Can you please tell me what the best exercise for that would be? I would really appreciate it. Thanks, Devorah A. Strengthening of your quadriceps and knee joints will give you maximum mobility for everyday life. Sadly, many women suffer from knee problems, and all to often think that the answer is not exercising. It's encouraging to see that you realize they need to be exercises to strengthen. To build up the knee joint, you must strengthen your thigh muscles, both in front and back of your legs, which govern the stability and strength of the knee. Even gentle activities such as walking can help with building knee strength. To really see improvements in knee strength, some resistance should be added. Seated leg extensions and leg curls with ankle weights are two great choices to start with. The key is to start slowly. Strengthening your knees will prevent fatigue in the thighs and will protect you from tearing ligaments. Other recently asked questions: • If I do weight training will I bulk up? • How can I get rid of back of the leg flab? • More questions and answers WorkoutsForWomen.com provides home exercise programs for today's busy women, under the guidance of a certified personal trainer.