7. Protect your heart — train on an ELLIPTICAL MACHINE.
Low-impact cardio is a great way for women over 40 to maintain a healthy heart. But if you really want your heart health to benefit, you need to exercise at 80% of your maximum heart rate for at least 30 minutes, 3 to 4 times a week. If 10 is as hard as you can do on a scale of one to 10, then you should work at the level of 8.