Athletes other than bodybuilders or those concerned primarily with strength may also benefit from boldenone undecylenate. This is due to the fact that the compound stimulates the release of erythropoietin, commonly referred to as EPO, in the kidneys. Erythropoeitin signals the body to increase the production of erythrocytes (red blood cells). Erythrocytes are the carrier of oxygen in the body and therefore if their concentration is increased in the body, a higher maximal oxygen capacity is produced and performance can be improved due to a delay in the on set of fatigue, including the build up of lactic acid. While the results would not be overly dramatic, a user should definitely notice an improvement all things being equal.
Most of the above horses belong to the Nearco sireline, mostly through the branches established by Sunday Silence and Northern Dancer . However, Curlin , Winx and Arrogate descend instead from Native Dancer . Both Nearco and Native Dancer were grandsons of Phalaris .  finishing his career with earnings of $ million. Spectacular Bid broke this record in 1980, amassing career earnings of $ million.  Purses began to increase sharply soon afterwards thanks in large part to the Breeders' Cup. The next record holders were John Henry, who earned $ million by the end of his career in 1984 and Alysheba, with earnings of $ million by the end of his career in 1988. Cigar was the next to hold the North American earnings title, finishing his career in 1998 with earnings just shy of $10 million ($9,999,815). That remained the North American record until Curlin in 2008, who earned $ million.  California Chrome broke this record in 2016 with career earnings of $ million, and was in turn surpassed by Arrogate when he won the 2017 Dubai World Cup to take his career earnings over $17 million.