Transdermal patches (adhesive patches placed on the skin) may also be used to deliver a steady dose through the skin and into the bloodstream. Testosterone-containing creams and gels that are applied daily to the skin are also available, but absorption is inefficient (roughly 10%, varying between individuals) and these treatments tend to be more expensive. Individuals who are especially physically active and/or bathe often may not be good candidates, since the medication can be washed off and may take up to six hours to be fully absorbed. There is also the risk that an intimate partner or child may come in contact with the application site and inadvertently dose himself or herself; children and women are highly sensitive to testosterone and can suffer unintended masculinization and health effects, even from small doses. Injection is the most common method used by individuals administering AAS for non-medical purposes. 
A six week double blind study conducted on over 140 weight training subjects indicated those subjects supplementing with L-Glutamine averaged a two per cent reduction in body fat in six weeks versus an average of one-half per cent reduction in body fat by the group taking the placebo. Four times as effective for reducing body fat! Furthermore, those using L-Glutamine averaged an increase in lean muscle mass of four to eight pounds in six weeks versus an average increase of one-half to one pound by those in the control group. Eight times as effective for increasing lean muscle mass.
San Francisco Streets are a challenging place to drive not so much because of the drivers but because of:
.intense traffic congestion, in some areas lasting many hours a day
.a street pattern that has is not a simple Cartesian grid but has heavily trafficked major diagonals
.a tweaked traffic flow pattern in which apparent two way streets change to one way streets and then back to two way along the length of a street.
.extensive use of Uber and Lyft cars that stop anywhere on a street including in the middle of a street to pick up and drop off passengers. (This is the home of Uber by the way.)
.major street and building construction going on all the time.