Lice in at Least 25 States Show Resistance to Common Treatments. Aug. 18, 2015 â The start of the school year means new classes, new friends, homework and sports. It also brings the threat of head lice. Scientists report today that lice populations in at least 25 states have ...
Both testosterone and estrogen levels experience a boost through regular sexual activity. Testosterone does more than just boost your sex drive, it helps fortify bones and muscles, and it keeps your heart in good working condition as well. In women, sex increases the levels of estrogen, which protects against heart disease.
The arousal does not need to be great, as testosterone increases are seen even after social interaction with attractive females. After a 5 minute conversation with an attractive woman, male testosterone levels can increase up to 30% from baseline (relative to an increase of 13% for conversing with males).