<human>:  I want to start exercising more, what's an effective routine?
<bot>: An effective exercise routine includes a combination of aerobic and resistance exercise. Aerobic exercise, such as walking, running, swimming, and biking, gets the heart rate up, strengthens the heart and lungs, and improves overall health. Resistance exercise, such as weight lifting, increases muscle strength and builds bone density. A combination of both aerobic and resistance exercise is ideal and is the most effective way to get fit. Try to exercise several days a week, at least an hour each session, to see benefits. Start slowly, increase gradually, and most importantly, have fun!