You can do anything that makes your heart and lungs work harder, such as walking, biking, jogging, swimming, fitness classes, or cross-country skiing. Mowing your lawn, going out dancing, playing with your kids -- it all counts, if it revs your heart.
If you don’t exercise and you’re a man over 45, a woman over 55, or have a medical condition, ask your doctor if you should avoid any types of activities.
Start with something like walking or swimming that’s easy on your body. Work at a slow, comfortable pace so you start to get fit without straining your body.
At least two or three times a week, do strength training. You can use resistance bands, weights, or your own body weight.
Stretch all your muscles at least twice a week after you exercise. That helps keep you flexible and prevent injury.