Weightlifting is a wonderful way to stay healthy and strong, especially as we get older. There are 3 main lifts that are important. Squat, it requires total body movement and control. Press, either bench or overhead, good for upper body strength. Deadlift, supports the back and legs. The biggest difference between weightlifting and doing the nautilus type circuit is that weightlifting works the normal body movement and stresses you find in everyday life. The nautilus just does isolated movements and often not in a natural way. Think about lifting a heavy lawnmower out of a truck. reaching up to grab something heavy on a top shelf. Picking up a large box off the floor. It really is an important part of being healthy and should not just be for "gym rats". Add some cardio and good diet and you will have a healthy, strong life as you get older. I have seen 80 year olds really benefit from this. Improves balance and strength and really changes their independence. For Women and Men. I've been doing it for about 3 years now and what a life changer. If you have chronic back pain etc, this will make you stronger and often eliminate those types of aches and pains, honest.

Some resources if you are interested in looking into it more.

Barbell Medicine: barbellmedicine.com (Two medical doctors)

Starting Strength: startingstrength.com (great starting program if you have never barbell training)