Yoga consists of postures done mindfully and with awareness of breath. They are easily learned and have dramatic effects if practiced regularly. The ones detailed here are extremely gentle. Regular practice of them with increase flexibility, strength, and balance. They will also help you enter deep states of relaxation and awareness.
Many people experience a greater serenity about life in general as well.
In practicing yoga, you are advised to maintain moment to moment awareness and not strive to get anywhere. Move slowly and consciously. Yoga involves exploring your limits without pushing past them. Honor your body and listen to what it tells you about when to stop and when to avoid a posture that is painful. Yoga requires no special equipment and can be done almost anywhere.