Yet more scientific evidence of the benefits of chair massage

Chemotherapy and radiotherapy are the standard approaches to slow the growth of colon cancer  - but high intensity exercise can have the same positive effect - a new study has found. Even a short session of high intensity interval training (HIIT) can induce changes in blood cells that slow the growth of colon cancer cells or even kill them off completely. These positive effects were seen after just one exercise session, although the colon cancer patients went on to complete 12 HIIT sessions over a month. Even after the first session, blood samples showed an increase in markers of inflammation, and when cancer cells in the lab wehre exposed to these samples they started dying, researchers at the University of Queensland have discovered. Although earlier studies have shown that intesntive exercise can dlow the growth of cancer cells, the researchers were surprised to see it was also reducing the number of cancer cells, suggesting they were beign killed off. Reference James L. Devin, Michelle M. Hill, Marina Mourtzakis, Joe Quadrilatero, David G. Jenkins, Tina L. Skinner. Acute high intensity interval exercise reduces colon cancer cell growth. The Journal of Physiology, 2019

In part 1, I looked at the impact of sitting on your muscles,  and in part 2 I started to explore the impact on the rest of your body.  In this post I continue to explore the impact of sitting on your circulatory system including your heart. Heart Disease When sitting for prolonged periods of time, muscles burn less fat and blood flows more sluggishly, allowing fatty acids to more easily clog the heart.  In 2012 Ford & Caspersen in their research paper, Sedentary behaviour and cardiovascular disease: a review of prospective studies (International Journal of Epidemiology, Vol 41, No 5 pages 1338 - 1353) showed that the people with the most sedentary time are more than twice as likely to have cardiovascular disease than those with the least. In 2012 Zedric and Hamilton found that just a few hours sitting suppresses a gene that helps keep your cardiovascular system healthy by controlling inflammation and blood clotting. T W Zedric & M T Hamilton, 2012 Identification of hemostatic genes expressed in human and rat leg muscles and a novel gene (LPP1/PAP2a) suppressed during prolonged physical inactivity (sitting), Lipids in Health and Disease, Vol 11 see http://www.biomedcentral.com/content/pdf/1476-511X-11-137.pdf Cholesterol Sitting also means that your large postural support muscles are inactive.  When active these muscles produce a quite of beneficial molecules.  One molecule skeletal muscles produce is an enzyme called lipoprotein lipase - which you can think of as a vacuum cleaner for fats in the blood stream.  A study in rats showed that after 24 hours forced inactivity, their lipoprotein lipase acitivity was reduced by 90 - 95%, which led to a 75% drip in the ability of their muscles to remove fats from their bloodstream as will as a significant decrease in "good" (HDL) cholesterol. L Bay & Mark Hamilton, 2003, Suppression of skeletal muscle lipoprotein lipase activity during physical inactivity: a molecular reason to maintain daily low-intensity activity, Journal of Physiology, Vol 551, No 2 pages 673 - 682.See http://onlinelibrary.wiley.com/doi/10.1113/jphysiol.2003.045591/full

My final swap is nettles for spiralina. Spirulina's deep blue-green color reveals its active ingredient — chlorophyll — clearly. Health.com explains it as one of the oldest life forms on Earth and possibly consumed in Aztec and African diets centuries ago. Today it's touted for its ability to strengthen the immune system, reduce fatigue and combat allergies. Nettles are another plant with chlorophyll that even rivals the amount found in spirulina, but they're often found in ditch banks, forests and riverbanks. It's sometimes called "stinging nettle" because it does just that; if you touch it without wearing gloves, the tiny hairs on every surface sting like a bee due to the presence of formic acid, leaving small red welts. But internally, Bon Appetit asserts, it acts like a tonic:

"Taken over time, nettle will strengthen your circulatory, immune, and endocrine systems to promote peak function. The stronger these systems, the better position our bodies are in to deal with whatever might come our way."

"It has been found to help cure mucus congestion, skin irritations, water retention and diarrhea … stimulate the digestive glands of the stomach, intestines, liver, pancreas and gall bladder. Applied externally, nettle tea … relieves rheumatism in both people and animals, makes a first-class gargle for mouth and throat infections, helps to clear up acne and eczema and promotes the healing of burns."