Why have I added this in? Because complementary therapy is about promoting health and laughter is used in the same way.
An argument a day can also help in the same way and is actually good for you.

Laughing helps boost your blood flow and may reduce your risk of developing heart disease, go on laugh at something even if you feel a bit stressed from your day or you heard the most terrible joke, trust me this works, go on have a laugh.
 
Laughing increases blood flow by more than 20 percent - a similar effect to an aerobic activity. Laughter is good for you and your child's mental and physical well-being, it also is the best stress reliever. Once again same as arguments
 
A good laugh loosens muscles, and it actually takes more muscles to frown then to laugh.
Lowers blood pressure and may lower levels of hormones that create stress and weaken the immunity. When you laugh, your body moves blood to your heart and lungs, boosting your energy level and making you feel better instantly, So this could help you with the most common colds. It's great to have bags of energy, at least it could help you exercise more perhaps. People that laugh more are also more inclined to do exercise like brisk walking or running.
 
When I was doing my revision and study into laughter I read in this book somewhere that helped me understand why it is important to our human body and what it said;
"There are hundreds of studies about the effects of laughter and humour on health. We spend hundreds of hours developing outcome goals that will positively affect our participant’s lives. Sometimes we need to step back. We need to remember who the participant is. We need to think about what brings everyone joy. We need to realize that when one begins to swallow, you eventually want sweets. When one begins to takes steps, she'll eventually want to go somewhere. When one begins to talk, she'll eventually want to sing. Neither is it proper to cure the body without the soul. It's our job to do many things. Not the least of them is to help our participants laugh and sing."
 
When we laugh, natural killer cells, which destroy tumours and viruses increase, along with Gamma-interferon (a disease-fighting protein), T-cells (important for our immune system) and B-cells (which make disease-fighting antibodies). As well as lowering blood pressure, laughter increases oxygen in the blood.
 
By the time a child reaches nursery school, he or she will laugh about 300 times a day. Adults laugh an average of 17 times a day.

The Science of Laughter: Laughter increases our capacity to fight disease. Laughing relaxes the body and reduces problems associated with high blood pressure, strokes, arthritis, and ulcers.
 
Here are some additional things we can do to improve our mood, enjoyment of life and mental health:
 

• Attempt to laugh at situations rather than bemoan them this helps improve our disposition and the disposition of those around us.

 

• Use cathartic laughter to release pent-up feelings of anger and frustration in socially acceptable ways.

 

• Laugh as a means of reducing tension because laughter is often followed by a state of relaxation.

• Lower anxiety by visualizing a humorous situation to replace the view of an anxiety-producing situation.

 
Laughter is a great thing -- that's why we've all heard the saying, "Laughter is the best medicine." There is strong evidence that laughter can actually improve health and help fight disease.
The boss, the tribal chief or the family patriarch -- use humour more than their subordinates. If you've often thought that everyone in the office laughs when the boss laughs, you're very perceptive. Controlling the laughter of a group becomes a way of exercising power by controlling the emotional climate of the group. So laughter, like much human behaviour, must have evolved to change the behaviour of others In an embarrassing or threatening situation, laughter may serve as a conciliatory gesture or as a way to deflect anger. If the threatening person joins the laughter, the risk of confrontation may lessen.
 
People are 30 times more likely to laugh in social settings than when they are alone (and without pseudo-social stimuli like television). Even nitrous oxide, or laughing gas, loses much of its oomph when taken in solitude.

• Without humour one's thought processes are likely to become stuck and narrowly focused leading to increased distress.

 

• Laughter is very powerful medicine. It can lower stress, dissolve anger and unite families in their resolve to overcome troubled times

 
"Nothing is good or bad. It is thinking that makes it so."
 

• By the time a child reaches nursery school, he or she will laugh about 300 times a day. Adults laugh an average of 17 times a day.

 
The sound of roaring laughter is far more contagious than any cough, sniffle, or sneeze. Humour and laughter can cause a domino effect of joy and amusement, as well as set off a number of positive physical effects. A good hearty laugh can help:
 

• Reduce stress,

• Lower blood pressure,

• Elevate mood,

• Boost immune system ,

• Improve brain functioning,

• Protect the heart,

• Connect you to others,

• Foster instant relaxation, and

• Make you feel good.

Hope this will help you smile, If not release that anger. Go out into the open and have a good scream. Writing situations down helps you to acknowledge the real problem and is great therapy to your emotions.
 
Tracy.