When we laugh, what happens inside our body?
Question from Hideo Nakahara
When we laugh our blood pressure goes up, our hearts beat faster. The rhythm of our breathing also changes, and the levels of chemicals in our brains shift. All of these changes to our physiology add up to many health benefits. This includes relieving tension and helping with breathing problems. Research suggests that regular laughter might even help to reduce levels of the stress hormone cortisol, which helps to keep the immune system on top form.
Answered by Laura Mears for Brain Dump in How It Works issue 118
For more science and technology articles, pick up the latest copy of How It Works from all good retailers or from our website now. If you have a tablet or smartphone, you can also download the digital version onto your iOS or Android device. To make sure you never miss an issue of How It Works magazine, subscribe today!