If you're not weight training yet, it's time to to start. Maybe you think cardio is enough, but it's not. Cardio exercise (such as swimming, walking, and running) does not build muscle. With age, your body loses muscle, your bone density starts to decline, and your posture starts to deteriorate.
Here's the good news: Proper weight training can help combat all of this. Additionally, if you are active in sports (and not performing strength exercises), you are setting yourself up for injury. For example, recent research shows that impaired hip strength more than doubles your risk of ACL tears. However, navigating the weight room can be overwhelming at first.
Here are some tips to get you started: