The first number they have retired is the number 12 in  1984, which represents the 12th Man, the aâ¦mazing fans of the  Seattle Seahawks who year in and year out cause the most false  start penalties in the NFL at Qwest Field and in the Kingdome, and  for their short two year time in Huskies Stadium.
The hamstring group comprises three muscles and their tendons, which originate on the ischial tuberosity (the part of the hip you sit on), flow down the back of the thigh and attach to the front and back of the knee. Like all muscles, the hamstrings are tethered by tendons, in this case to the hip and knee bones.
The hamstrings are a group of large muscles at the back top of the thigh. They consist of the semimembranosis, the semitendinosis, and the biceps femoris muscles. If these muscles become tight, they can be easily injured.ime Frame. There is no set time frame in terms of how long it takes to gain more flexibility in the hamstrings. According to the American Council on Exercise, everyone's natural level of flexibility is different.