Feel the warmth of an open fire on your face. Take long, slow deep breaths. Be aware that relaxation is a learned skill simple for some, harder for others. Sitting quietly in a chair and true relaxation are not necessarily the same. For those who find relaxation difficult, specific training in techniques such as biofeedback might help.
Relaxation can keep blood pressure in check, reduce muscle tension and promote sleep.
It can also be helpful for medical problems such as chronic pain, anxiety and for muscle injuries such as whiplash. Regular exercise gives you a sense of control and a feeling of accomplishment. It also uses up some of that excess energy in a beneficial, productive way. Get your body moving. Bend, stretch, play hard and blow off steam.