Our bodies are made to move. The challenge is to find the types of exercise you enjoy most, and then build them into your life. Physical activity can take simple and modest forms, like getting off the subway or bus one stop earlier and walking to your destination. Start by finding something you can do every day without altering your schedule too much. Making physical activity a simple, daily habit greatly increases your chances of staying active.
An interesting observation is people’s inclination to choose exercise that aggravates their current condition. In gyms, the bulky, aggressive people tend to lift weights, which makes them even bulkier and more aggressive. Yoga classes are often full of delicate people who would probably be grounded and strengthened by doing some weightlifting, just as a yoga class would lighten weightlifters. Different forms of exercise will give you different types of energy, and by listening to your body you can find the movement that will work best for you.