many men experience low sexual desire after the age among other factors . these compartments are found beneath the skin , as well as lining the gut , lungs , blood vessels and muscles , and join together to form a network supported by a mesh of strong , flexible proteins getty 223 previously unknown society lived in amazon rainforest before europeans arrived , say archaeologists working in the brazilian state of mato grosso , a team led by archaeologists at the university of exeter unearthed hundreds of villages hidden in the depths of the rainforest . and this led to greater reported levels of sexual satisfaction . image copyright thinkstock exposure to bright light can lead to greater sexual satisfaction in men who have low sexual desire , a new study suggests . these excavations included evidence of fortifications and mysterious earthworks called geoglyphs josé iriarte 323 one in 10 people have traces of cocaine or heroin on fingerprints , study finds more than one in 10 people were found to have traces of class a drugs on their fingers by scientists developing a new fingerprint - based drug test . but they said more research was needed before it could be used as a treatment . exposure to light helps boost men ’s levels of testosterone and increases sexual satisfaction . a light box is used to simulate exposure to sunlight . the researchers carried out their study on 38 men who had been diagnosed with disorders which cause a lack of interest in sex .