In case repeated blood samples are required at short intervals, a maximum of 0.6 ml/kg/day or 1.0% of an animal's total blood volume can be removed every 24 hours. The estimated blood volume in adult animals is 55 to 70 ml/kg body weight.
Four special teams units exist: 1  The group of players that handles punts, kickoffs, and punt returns. 2  The unit that handles field goal and extra point attempts. 3  The group that takes care of kickoff returns. 4  The unit that attempts to block field goal and extra point attempts.
In the NFL, the visiting team calls the coin toss. The visiting team in the Super Bowl is the team with the lower playoff seed. If the opposing teams have the same seed, there are a series of tie-breaking rules to determine the âlesserâ team to designate as the visitor.